A Study on the Factors Influencing Residents’ Intention of Continuous Residence in Innovation Cities: The Case of South Korea
Abstract
1. Introduction
2. Materials and Methods
2.1. Study Area: Innovation Cities
2.2. Theoretical Analysis Framework
2.2.1. Effect of Residential Environment Satisfaction on Intention of Continuous Residence
2.2.2. Mediating Effect of Neighbor Relations
2.3. Measures
2.4. Data Collection
2.5. Analytical Method
3. Results
3.1. Exploratory Factor Analysis and Reliability
3.2. Descriptive Statistics and Correlation Analysis
3.3. Mediating Effect Analysis
4. Discussion
5. Conclusions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
Appendix A
| Metropolitan Cities | Non-Metropolitan Cities | |||
|---|---|---|---|---|
| B (S.E.) | β | B (S.E.) | β | |
| (Constant) | 1.242 (0.203) | 1.304 (0.182) | ||
| Gender (ref. female) | 0.059 (0.049) | 0.047 | −0.083 (0.047) | −0.053 * |
| Age | 0.002 (0.002) | 0.054 | 0.000 (0.002) | 0.007 |
| Length of residence | 0.000 (0.000) | 0.032 | 0.001 (0.000) | 0.151 *** |
| Number of household members | −0.006 (0.026) | −0.011 | −0.015 (0.022) | −0.022 |
| Monthly household income | 0.002 (0.017) | 0.004 | 0.072 (0.015) | 0.151 *** |
| Housing tenure (ref. renters) | 0.155 (0.062) | 0.110 ** | −0.023 (0.055) | −0.013 |
| Commercial facilities | 0.130 (0.053) | 0.126 ** | 0.076 (0.050) | 0.056 |
| Medical facilities | 0.158 (0.055) | 0.155 *** | 0.116 (0.046) | 0.095 ** |
| Childcare/educational facilities | 0.021 (0.056) | 0.019 | 0.164 (0.054) | 0.119 *** |
| Cultural facilities | 0.153 (0.046) | 0.164 *** | 0.067 (0.044) | 0.058 |
| Neighbor relations | 0.065 (0.040) | 0.067 | 0.100 (0.036) | 0.085 *** |
| R2 | 0.194 | 0.142 | ||
| F | 11.668 *** | 16.883 *** | ||
References
- Jung, H. Relocation of Public Institutions and Local Public Finance: Evidence from South Korea. Int. Rev. Adm. Sci. 2024, 90, 741–758. [Google Scholar] [CrossRef]
- Ko, J.; Lee, J.; Koo, J.H. The Influx of Youth as an Effect of the New Town Development Policy through Relocation of Public Institutions: Focusing on Differences between Large and Medium/Small-City Location Types. J. Asian Archit. Build. Eng. 2024, 24, 968–984. [Google Scholar] [CrossRef]
- Ministry of Land, Infrastructure and Transport (MOLIT). White Paper on the Relocation of Public Institutions and the Construction of Innovation Cities, 2003–2015; MOLIT: Sejong, Republic of Korea, 2016. (In Korean)
- Kim, J. A Study on the Economic Impact of Public Sector Relocation and Innovative City Development. J. Local Gov. Stud. 2022, 26, 119–145. (In Korean) [Google Scholar] [CrossRef]
- Kim, T.; Min, S.; Kim, E.; Seo, Y. Evaluation of 15 Years of Innovation City Achievements and Future Development Strategies; National Land Policy Brief; Korea Research Institute for Human Settlements (KRIHS): Sejong, Republic of Korea, 2020. (In Korean) [Google Scholar]
- Moon, Y. Effects and Policy Directions of the Relocation of Public Institutions; KDI Policy Forum, No. 283; Korea Development Institute (KDI): Sejong, Republic of Korea, 2021. (In Korean) [Google Scholar]
- Alemu, L.S.; Berhanu, W.; Sokkido, D.L. Determinants of residential adjustment intentions: Insights from low-cost condominium housing in Addis Ababa, Ethiopia. Front. Built Environ. 2025, 11, 1565545. [Google Scholar] [CrossRef]
- Lee, H.; Park, H.; Jung, W. An analysis on the factors to affect the settlement consciousness of inhabitants. Korean Assoc. Policy Stud. 2004, 13, 147–167. (In Korean) [Google Scholar]
- Mashio, T. Relationship between Subjective Well-Being and the Intention to Reside in a Specific Region: A Case Study in Wajima City, Ishikawa Prefecture. Sustainability 2024, 16, 9339. [Google Scholar] [CrossRef]
- Lim, M. A Study on the Perception of Urban Satisfaction and the Consciousness of Inhabitant in Seoul -Focusing on the Satisfaction of Living Environment and Urban Risk. J. Real Estate Stud. 2015, 62, 107–120. (In Korean) [Google Scholar]
- Ahmadiani, M.; Ferreira, S. Environmental amenities and quality of life across the United States. Ecol. Econ. 2019, 164, 106341. [Google Scholar] [CrossRef]
- Fornara, F.; Manca, S. Healthy Residential Environments for the Elderly. In International Handbooks of Quality-of-Life; Fleury-Bahi, G., Pol, E., Navarro, O., Eds.; Springer: New York, NY, USA, 2016; pp. 441–465. [Google Scholar] [CrossRef]
- Kuijlenburg, R. Teaching urban facility management, global citizenship and livability. Facilities 2020, 38, 849–857. [Google Scholar] [CrossRef]
- Özkan, D.G.; Yilmaz, S. The effects of physical and social attributes of place on place attachment: A case study on Trabzon urban squares. Archnet-IJAR Int. J. Archit. Res. 2019, 13, 133–150. [Google Scholar] [CrossRef]
- Fang, Y. Residential Satisfaction, Moving Intention and Moving Behaviours: A Study of Redeveloped Neighbourhoods in Inner-City Beijing. Hous. Stud. 2006, 21, 671–694. [Google Scholar] [CrossRef]
- Lewicka, M. Place attachment: How far have we come in the last 40 years? J. Environ. Psychol. 2011, 31, 207–230. [Google Scholar] [CrossRef]
- Scopelliti, M.; Tiberio, L. Homesickness in University Students: The Role of Multiple Place Attachment. Environ. Behav. 2010, 42, 335–350. [Google Scholar] [CrossRef]
- Frank, L.; Kerr, J.; Rosenberg, D.; King, A. Healthy Aging and Where You Live: Community Design Relationship with Physical Activity and Body Weight in Older Americans. J. Phys. Act. Health 2010, 7 (Suppl. S1), S82–S90. [Google Scholar] [CrossRef] [PubMed]
- Jun, H.; Hur, M. The Relationship between Walkability and Neighborhood Social Environment: The Importance of Physical and Perceived Walkability. Appl. Geogr. 2015, 62, 115–124. [Google Scholar] [CrossRef]
- Lund, H. Pedestrian environments and sense of community. J. Plan. Educ. Res. 2002, 21, 301–312. [Google Scholar] [CrossRef]
- Baron, R.M.; Kenny, D.A. The moderator-mediator variable distinction in social psychological research: Conceptual, strategic, and statistical considerations. J. Pers. Soc. Psychol. 1986, 51, 1173–1182. [Google Scholar] [CrossRef]
- Balland, P.A.; Jara-Figueroa, C.; Petralia, S.G.; Steijn, M.P.A.; Rigby, D.L.; Hidalgo, C.A. Complex Economic Activities Concentrate in Large Cities. Nat. Hum. Behav. 2020, 4, 248–254. [Google Scholar] [CrossRef]
- Ganong, P.; Shoag, D. Why Has Regional Income Convergence in the U.S. Declined? J. Urban Econ. 2017, 102, 76–90. [Google Scholar] [CrossRef]
- OECD. OECD Regions and Cities at a Glance 2024; OECD Publishing: Paris, France, 2024. [Google Scholar] [CrossRef]
- Bae, J. French Public Agencies Relocation Policy. J. Local Gov. Stud. 2006, 9, 171–189. (In Korean) [Google Scholar]
- Faggio, G. Relocation of Public Sector Workers: Evaluating a Place-Based Policy. J. Urban Econ. 2019, 111, 53–75. [Google Scholar] [CrossRef]
- Marshall, J.N.; Bradley, D.; Hodgson, C.; Alderman, N.; Richardson, R. Relocation, Relocation, Relocation: Assessing the Case for Public Sector Dispersal. Reg. Stud. 2005, 39, 767–787. [Google Scholar] [CrossRef]
- Ministry of the Interior and Safety. 2012–2022 Population Census in Innovation Cities. Available online: https://jumin.mois.go.kr/# (accessed on 1 August 2025). (In Korean)
- Ministry of Land, Infrastructure and Transport. Innovation Cuty Development Promotion Team. Available online: https://innocity.molit.go.kr (accessed on 10 September 2025). (In Korean)
- He, L.; Wang, J.; Feng, Z.; Chen, H.; Lu, J. Psychological Needs and Social Comparison: A Dual Analysis of the Life Satisfaction of Local Workers with Agricultural Hukou. BMC Public Health 2024, 24, 3008. [Google Scholar] [CrossRef]
- Sirgy, M.J.; Gao, T.; Young, R.F. How does residents’ satisfaction with community services influence quality of life (QOL) outcomes? Appl. Res. Qual. Life 2008, 3, 81. [Google Scholar] [CrossRef]
- Kwon, Y.; Kim, J.; Ha, S.; Hyun, T.; Kim, G. Analysis of Regional Development Effects of the Relocation of Public Institutions and Strategies for Maximization; Korea Research Institute for Human Settlements (KRIHS): Sejong, Republic of Korea, 2015. (In Korean) [Google Scholar]
- Kwon, O.K.; Kang, E.T.; Ma, K.R. A Study on the Impact of the Urban Decline on the Subjective Well-being of Residents. J. Korean Reg. Sci. Assoc. 2019, 35, 33–47. (In Korean) [Google Scholar] [CrossRef]
- Lee, K.-Y. Relationship between Public Service Satisfaction and Intention of Continuous Residence of Younger Generations in Rural Areas: The Case of Jeonbuk, Korea. Land 2021, 10, 1203. [Google Scholar] [CrossRef]
- Song, J.Y.; Yim, S.K. Theoretical Exploration of Social Sustainability for the Qualitative Development of Cities. J. Korean Geogr. Soc. 2015, 50, 677–694. (In Korean) [Google Scholar]
- Clopton, A.W.; Finch, B.L. Re-Conceptualizing Social Anchors in Community Development: Utilizing Social Anchor Theory to Create Social Capital’s Third Dimension. Community Dev. 2011, 42, 70–83. [Google Scholar] [CrossRef]
- Seifried, C.; Clopton, A.W. An Alternative View of Public Subsidy and Sport Facilities through Social Anchor Theory. City Cult. Soc. 2013, 4, 49–55. [Google Scholar] [CrossRef]
- Van de Walle, S.; Kampen, J.; Bouckaert, G. Deep Impact for High Impact Agencies?: Assessing the Role of Bureaucratic Encounters in Evaluations of Government. Public Perform. Manag. Rev. 2005, 28, 532–549. [Google Scholar] [CrossRef]
- Van Ryzin, G.G. Pieces of a puzzle: Linking government performance, Citizen satisfaction, and trust. Public Perform. Manag. Rev. 2007, 30, 521–535. [Google Scholar] [CrossRef]
- Christensen, T.; Laegried, P. Trust in government: The relative importance of service satisfaction, political factors, and demography. Public Perform. Manag. Rev. 2005, 28, 487–511. [Google Scholar] [CrossRef]
- Lee, K.Y.; Jeong, M.G. Residential environmental satisfaction, social capital, and place attachment: The case of Seoul, Korea. J. Hous. Built Environ. 2021, 36, 559–575. [Google Scholar] [CrossRef]
- Asad, A.L.; Hwang, J. Indigenous Places and the Making of Undocumented Status in Mexico-US Migration. Int. Migr. Rev. 2019, 53, 1032–1077. [Google Scholar] [CrossRef]
- Bohra, P.; Massey, D.S. Processes of Internal and International Migration from Chitwan, Nepal. Int. Migr. Rev. 2009, 43, 621–651. [Google Scholar] [CrossRef]
- Mouratidis, K.; Andersen, B. Why do people wish to stay or move in high-density cities? Long-term residential intentions in compact urban environments. Cities 2024, 147, 104678. [Google Scholar] [CrossRef]
- Lee, H.S.; Lim, J.H. SPSS 24 Manual; JypHyunJae Publishing Co.: Seoul, Republic of Korea, 2017. (In Korean) [Google Scholar]
- Lee, I.H. Easyflow Regression Analysis; Hannarae Publishing, Co.: Seoul, Republic of Korea, 2016. (In Korean) [Google Scholar]
- Preacher, K.J.; Rucker, D.D.; Hayes, A.F. Addressing Moderated Mediation Hypotheses: Theory, Methods, and Prescriptions. Multivar. Behav. Res. 2007, 42, 185–227. [Google Scholar] [CrossRef]
- Kwon, Y.; Sohn, M.; Choi, M. Unmet Healthcare Needs and the Local Extinction Index: An Analysis of Regional Disparities Impacting South Korea’s Older Adults. Front. Public Health 2024, 12, 1423108. [Google Scholar] [CrossRef]
- Woolever, C. A Contextual Approach to Neighborhood Attachment. Urban Stud. 1992, 29, 99–116. [Google Scholar] [CrossRef]
- Lee, S.; Ishiro, T. Regional Economic Analysis of Major Areas in South Korea: Using 2005–2010–2015 Multi-Regional Input–Output Tables. Econ. Struct. 2023, 12, 12. [Google Scholar] [CrossRef]
- OECD. State-Owned Enterprises in the Development Process; OECD Publishing: Paris, France, 2015. [Google Scholar]
- World Bank. Listing State-Owned Enterprises in Emerging and Developing Economies: Lessons from 30 Years of Success and Failure; World Bank Group: Washington, DC, USA, 2021. [Google Scholar]
- Alfred, G. Nhema. Privatisation of Public Enterprises in Developing Countries: Case for State Ownership When Private Sector Is Weak. Int. J. Humanit. Soc. Sci. 2015, 5, 242–250. Available online: https://www.ijhssnet.com/journals/Vol_5_No_9_September_2015/26.pdf (accessed on 5 August 2025).
- Xu, Y.; Lozhnikova, A.; Kichko, N. Outward relocation of central state-owned enterprises headquarters: Impact on local tax base and economy. J. Infrastruct. Policy Dev. 2024, 8, 3082. [Google Scholar] [CrossRef]
- Wen, F.; Jiang, Y.; Jiang, L. Intercity mobility pattern and settlement intention: Evidence from China. Comput. Urban Sci. 2022, 2, 46. [Google Scholar] [CrossRef]



| Year | Nationwide | Seoul Capital Area | Innovation Cities |
|---|---|---|---|
| 2012 | 5094.8 | 2513.3 | 336.5 |
| 2013 | 5114.1 | 2525.8 | 336.7 |
| 2014 | 5132.7 | 2536.3 | 338.5 |
| 2015 | 5152.9 | 2547.0 | 342.2 |
| 2016 | 5169.6 | 2559.0 | 343.6 |
| 2017 | 5177.8 | 2567.9 | 343.3 |
| 2018 | 5182.6 | 2579.7 | 343.8 |
| 2019 | 5184.9 | 2592.5 | 342.3 |
| 2020 | 5182.9 | 2603.8 | 340.9 |
| 2021 | 5163.8 | 2602.3 | 339.5 |
| 2022 | 5143.9 | 2598.5 | 336.6 |
| Innovation Cities | Region Size | Number of Relocated Institutions (Units) | Employees of Relocated Institutions (Persons) | Relocation Period |
|---|---|---|---|---|
| Busan | Metropolitan city | 13 | 3457 | December 2012 to December 2017 |
| Daegu | Metropolitan city | 10 | 3277 | December 2012 to October 2015 |
| Gwangju/Jeonnam | Non-Metropolitan city | 16 | 7262 | December 2013 to January 2019 |
| Ulsan | Metropolitan city | 9 | 5860 | January 2013 to February 2019 |
| Gangwon | Non-Metropolitan city | 11 | 6088 | November 2013 to April 2017 |
| Chungbuk | Non-Metropolitan city | 11 | 3125 | November 2013 to December 2019 |
| Jeonbuk | Non-Metropolitan city | 12 | 5300 | November 2013 to September 2017 |
| Gyeongbuk | Non-Metropolitan city | 11 | 5451 | April 2013 to March 2016 |
| Gyeongnam | Non-Metropolitan city | 11 | 4249 | October 2013 to December 2017 |
| Jeju | Non-Metropolitan city | 6 | 752 | December 2012 to October 2015 |
| Total | n | % |
|---|---|---|
| 1606 | 100.0% | |
| Gender | ||
| Male | 707 | 44.0% |
| Female | 899 | 56.0% |
| Age | ||
| 20–29 | 218 | 13.6% |
| 30–39 | 231 | 14.4% |
| 40–49 | 299 | 18.6% |
| 50–59 | 319 | 19.9% |
| Above 60+ | 539 | 33.6% |
| Monthly housing income (KRW) | ||
| Below KRW 2 million | 121 | 7.5% |
| KRW 2–3 million | 300 | 18.7% |
| KRW 3–4 million | 284 | 17.7% |
| KRW 4–5 million | 246 | 15.3% |
| KRW 5–6 million | 258 | 16.1% |
| Above KRW 6 million | 397 | 24.7% |
| Household members | ||
| 1 | 249 | 15.5% |
| 2 | 457 | 28.5% |
| 3 | 434 | 27.0% |
| Above 4 | 466 | 29.0% |
| Housing tenure | ||
| Homeowners | 1176 | 73.2% |
| Renters | 430 | 26.8% |
| Length of residence | ||
| Below 5 years | 331 | 20.6% |
| 5–15 years | 413 | 25.7% |
| 15–30 years | 442 | 27.5% |
| Above 30 years above | 420 | 26.1% |
| Regional size | ||
| Metropolitan area | 546 | 34.0% |
| Non-metropolitan area | 1060 | 66.0% |
| Model | Regression Equation | Criterion |
|---|---|---|
| Model 1 | Y = B10 + B11X | B11 should be statistically significant. |
| Model 2 | M = B20 + B21X | B21 should be statistically significant. |
| Model 3 | Y = B30 + B31X + B32M | B32 should be statistically significant. B31 should be smaller than B11. |
| Category | Measurements | Factor Loading | Eigenvalue/Cronbach’s α |
|---|---|---|---|
| Commercial facilities | Convenience stores | 0.856 | 1.674/0.676 |
| Restaurants | 0.581 | ||
| Large-scale supermarket | 0.528 | ||
| Medical facilities | Local clinics | 0.839 | 2.925/0.855 |
| Dental clinics | 0.815 | ||
| Pharmacies | 0.750 | ||
| General hospitals | 0.678 | ||
| Childcare/educational facilities | Elementary schools | 0.819 | 2.681/0.841 |
| Middle and high schools | 0.794 | ||
| Kindergartens | 0.729 | ||
| Other educational institutes | 0.615 | ||
| Cultural facilities | Performance venues | 0.818 | 2.239/0.727 |
| Movie theaters | 0.710 | ||
| Public libraries | 0.630 | ||
| Neighbor relations | Frequent conversations with neighbors | 0.889 | 2.333/0.847 |
| Well-acquainted with neighbors | 0.881 | ||
| Trust in neighbors | 0.829 |
| Factor | Mean | Std. Dev. | 1 | 2 | 3 | 4 | 5 | 6 | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Commercial facilities | 2.89 | ±0.590 | 1 | |||||
| 2 | Medical facilities | 2.74 | ±0.636 | 0.550 *** | 1 | ||||
| 3 | Childcare/educational facilities | 2.74 | ±0.571 | 0.541 *** | 0.586 *** | 1 | |||
| 4 | Cultural facilities | 2.51 | ±0.667 | 0.512 *** | 0.506 *** | 0.537 *** | 1 | ||
| 5 | Neighbor relations | 2.20 | ±0.658 | 0.134 *** | 0.192 *** | 0.195 *** | 0.229 *** | 1 | |
| 6 | Intention of continuous residence | 2.95 | ±0.733 | 0.249 *** | 0.277 *** | 0.268 *** | 0.266 *** | 0.184 *** | 1 |
| Model 1 | Model 2 | Model 3 | ||||
|---|---|---|---|---|---|---|
| DV: Intention of continuous residence | DV: Neighbor relations | DV: Intention of continuous residence | ||||
| B (S.E.) | β | B (S.E.) | β | B (S.E.) | β | |
| (Constant) | 1.392 (0.153) | 0.587 (0.138) | 1.339 (0.153) | |||
| Gender (ref. female) | −0.029 (0.035) | −0.020 | 0.040 (0.032) | 0.031 | −0.033 (0.035) | −0.022 |
| Age | 0.002 (0.001) | 0.047 * | 0.007 (0.001) | 0.157 *** | 0.002 (0.001) | 0.034 |
| Length of residence | 0.000 (0.000) | 0.120 *** | 0.000 (0.000) | 0.064 ** | 0.000 (0.000) | 0.115 *** |
| Number of household members | −0.006 (0.017) | −0.010 | 0.070 (0.016) | 0.123 *** | −0.013 (0.017) | −0.020 |
| Monthly household income | 0.048 (0.012) | 0.109 *** | 0.009 (0.010) | 0.022 | 0.048 (0.012) | 0.108 *** |
| Housing tenure (ref. renters) | 0.049 (0.042) | 0.030 | 0.149 (0.038) | 0.100 *** | 0.036 (0.042) | 0.022 |
| Region size (ref. Non-metropolitan cities) | −0.037 (0.036) | −0.024 | 0.070 (0.033) | 0.050 ** | −0.044 (0.036) | −0.028 |
| Commercial facilities | 0.089 (0.038) | 0.072 ** | −0.029 (0.034) | −0.026 | 0.092 (0.038) | 0.074 ** |
| Medical facilities | 0.137 (0.036) | 0.119 *** | 0.092 (0.033) | 0.089 *** | 0.129 (0.036) | 0.112 *** |
| Childcare/educational facilities | 0.119 (0.041) | 0.093 *** | 0.065 (0.037) | 0.056 * | 0.114 (0.040) | 0.088 *** |
| Cultural facilities | 0.109 (0.033) | 0.100 *** | 0.138 (0.029) | 0.140 *** | 0.097 (0.033) | 0.088 *** |
| Neighbor relations | 0.090 (0.028) | 0.081 *** | ||||
| R2 | 0.144 | 0.134 | 0.150 | |||
| F | 24.362 ** | 22.469 ** | 23.358 ** | |||
| Bootstrap | |||||||
|---|---|---|---|---|---|---|---|
| Path | Total Effect | Direct Effect | Indirect Effect Size | S. E | LL CI | UL CI | |
| Com.F. → (N.R.) → I.C.R. | 0.089 | 0.092 | −0.003 | 0.004 | −0.010 | 0.006 | Non-Sig. |
| Med.F. → (N.R.) → I.C.R. | 0.137 | 0.129 | 0.008 | 0.005 | 0.007 | 0.138 | Sig. |
| Chi./Edu.F. → (N.R.) → I.C.R. | 0.119 | 0.114 | 0.005 | 0.005 | 0.018 | 0.174 | Sig. |
| Cul.F. → (N.R.) → I.C.R. | 0.109 | 0.097 | 0.012 | 0.014 | 0.083 | 0.243 | Sig. |
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Lee, K.-Y. A Study on the Factors Influencing Residents’ Intention of Continuous Residence in Innovation Cities: The Case of South Korea. Systems 2025, 13, 814. https://doi.org/10.3390/systems13090814
Lee K-Y. A Study on the Factors Influencing Residents’ Intention of Continuous Residence in Innovation Cities: The Case of South Korea. Systems. 2025; 13(9):814. https://doi.org/10.3390/systems13090814
Chicago/Turabian StyleLee, Kyung-Young. 2025. "A Study on the Factors Influencing Residents’ Intention of Continuous Residence in Innovation Cities: The Case of South Korea" Systems 13, no. 9: 814. https://doi.org/10.3390/systems13090814
APA StyleLee, K.-Y. (2025). A Study on the Factors Influencing Residents’ Intention of Continuous Residence in Innovation Cities: The Case of South Korea. Systems, 13(9), 814. https://doi.org/10.3390/systems13090814

