Massac County, Illinois
County seat: Metropolis · Population 13,502 (2025) · 237 sq mi
Massac County is the 76th most populous of Illinois's 102 counties, with 13,502 people (2025 estimate). Its county seat is Metropolis. It is part of the Southern region, one of the 10 Illinois economic development regions (DCEO). The map shows its 3 cities and towns and the 5 neighboring counties.
Massac County facts
- County seat
- Metropolis
- Population (2025 estimate)
- 13,502 −4.8% since 2020
- Land area
- 237 sq mi 96th largest of 102
- Water area
- 5 sq mi
- Population density
- 57 per sq mi
- Established
- 1843
- Named after
- Fort Massac Massac County, Illinois
- Largest city
- Metropolis 5,727
- Median household income
- $65,116
- Cities and towns
- 3
- ZIP codes
- 8
- Time zone
- Central
- FIPS code
- 17127
Cities and towns in Massac County
Massac County has 3 incorporated cities, towns and villages. Populations count the people living inside Massac County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Metropolis (county seat) | City | 5,727 | |
| Brookport | City | 691 | |
| Joppa | Village | 330 |
ZIP codes in Massac County
8 ZIP codes reach into Massac County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 62908 also Johnson County
- 62910 also Pope County
- 62938 also Pope and Hardin counties
- 62941 also Pulaski County
- 62943 also Johnson and Pope counties
- 62953
- 62956 also Pulaski County
- 62960 also Pope County
Population of Massac County, 2020–2025
Massac County shrank by 674 people (−4.8%) between April 2020 and July 2025: 604 more deaths than births and a net loss of 63 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 14,141 |
| 2021 | 13,959 |
| 2022 | 13,863 |
| 2023 | 13,741 |
| 2024 | 13,616 |
| 2025 | 13,502 |
Neighboring counties
- McCracken County, Kentucky south · 67,553 people
- Pope County northeast · 3,672 people
- Johnson County northwest · 13,363 people
- Pulaski County west · 4,820 people
- Livingston County, Kentucky east · 8,863 people
Printable Massac 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) (77 KB)
- PNG (2400 px) (76 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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