Mayor of Sejong City
- Spokesperson
- Special Policy Advisor
- Vice Mayor for Administrative Affairs
- Vice Mayor for Economy
- Operating Support Division
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Planning & Coordination Office
- Policy Planning Division
- Budget Division
- Youth Policy Division
- External Cooperation Division
- Regulatory Reform and Legal
- Affairs Division
- Information Statistics Division
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Citizen Safety Office
- Safety Policy Division
- Disaster Management Division
- Flood Control and Disaster Prevention Division
- Civil Service Division
- Land Information Division
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Local Administration Bureau
- Local Administration Division
- Civic Communication Division
- Education Support Division
- Accounting Division
- Tax Administration Division
- Tax Source Management Division
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Health & Welfare Bureau
- Welfare Policy Division
- Women and Family Affairs Division
- Children and Youth Affairs Division
- Elderly and Disabled Affairs Division
- Health Policy Division
I- nfectious Diseases Management Division
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Culture, Sports & Tourism Bureau
- Culture and Arts Division
- Sports Promotion Division
- Tourism Promotion Division
- Cultural Heritage Division
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Economy & Industry Bureau
- Economic Policy Division
- Corporate Support Division
- Small and Micro Business Promotion Division
- Investment Promotion Division
- Industrial Sites Division
- Agricultural Policy Division
- Local Food Division
- Animal Health and Prevention Division
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Future Strategy Office
- Strategy Planning Division
- Future Capital Base Foundation Division
- Balanced Regional
- Development Division
- Smart City Division
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Construction & Transportation Bureau
- City Division
- Building Division
- Housing Division
- Road Division
- Transportation Division
- City Landscape Division
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Environment & Green Space Bureau
- Environmental Policy Division
- Resource Circulation Division
- Water Management Policy Division
- Forest Park Division
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Chungcheong Combined Local Government Bureau
- Mega City Policy Division
- Mega City Industrial Division
- Mega City Support Division
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Fire Service Office
- Fire Administration Division
- Response and Prevention Division
- 119 Situation Room