Union County, North Carolina
County seat: Monroe · Population 267,674 (2025) · 633 sq mi
Union County is the 8th most populous of North Carolina's 100 counties, with 267,674 people (2025 estimate). Its county seat is Monroe. It is part of the Southwest Region region, one of the 8 Prosperity Zones of North Carolina. The map shows its 15 cities and towns and the 6 neighboring counties.
Union County facts
- County seat
- Monroe
- Population (2025 estimate)
- 267,674 +12.4% since 2020
- Land area
- 633 sq mi 23rd largest of 100
- Water area
- 7 sq mi
- Population density
- 423 per sq mi
- Established
- 1842
- Same name
- One of 17 Union Counties in the US
- Named after
- merger combination of two or more political or administrative entities
- Largest city
- Indian Trail 44,303
- Median household income
- $102,900
- Cities and towns
- 15 plus 1 CDPs
- ZIP codes
- 12
- Time zone
- Eastern
- FIPS code
- 37179
Cities and towns in Union County
Union County has 15 incorporated cities, towns and villages. Populations count the people living inside Union County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Indian Trail | Town | 44,303 | |
| Monroe (county seat) | City | 42,644 | |
| Waxhaw | Town | 23,140 | |
| Stallings | Town | 17,233 | Mecklenburg County |
| Weddington | Town | 14,509 | Mecklenburg County |
| Wesley Chapel | Village | 9,566 | |
| Unionville | Town | 7,322 | |
| Marvin | Village | 7,040 | |
| Wingate | Town | 4,628 | |
| Fairview | Town | 3,805 | |
| Lake Park | Village | 3,609 | |
| Mineral Springs | Town | 3,514 | |
| Marshville | Town | 2,739 | |
| Hemby Bridge | Town | 1,764 | |
| Mint Hill | Town | 0 | Mecklenburg County |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| JAARS | 715 |
ZIP codes in Union County
12 ZIP codes reach into Union County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 28079
- 28103 also Anson County
- 28104 also Mecklenburg County
- 28105 also Mecklenburg County
- 28107 also Cabarrus, Mecklenburg and Stanly counties
- 28108
- 28110
- 28112
- 28133 also Anson County
- 28173
- 28174
- 28227 also Mecklenburg County
Population of Union County, 2020–2025
Union County grew by 29,495 people (+12.4%) between April 2020 and July 2025: 3,843 more births than deaths and a net gain of 25,622 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 239,615 |
| 2021 | 244,459 |
| 2022 | 249,615 |
| 2023 | 257,474 |
| 2024 | 263,704 |
| 2025 | 267,674 |
Neighboring counties
- Lancaster County, South Carolina southwest · 114,296 people
- Anson County east · 21,758 people
- Mecklenburg County northwest · 1,233,383 people
- Stanly County northeast · 68,830 people
- Chesterfield County, South Carolina southeast · 44,740 people
- Cabarrus County north · 249,725 people
Printable Union County map
The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.
- PDF (Letter) (136 KB)
- PNG (2400 px) (99 KB)
Paste this code to embed the map on your site:
Sources
- Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files (1:500,000).
- Population: Census Bureau county and city estimates, Vintage 2025. CDP populations: American Community Survey 2020–2024.
- Places and ZIP codes: Census Bureau 2026 Gazetteer and 2020 ZIP Code Tabulation Area relationship files.
- County seat, founding year and name origin: Wikidata (CC0), checked against state sources.
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