Marion County, Texas
Updated · Data: U.S. Census Bureau
Marion County, Texas has its county seat in Jefferson and FIPS code 48315. About 9,631 people live here, the 167th most populated of the 254 Texas counties.
| County seat | Jefferson |
|---|---|
| FIPS code | 48315 (Texas 48 + county 315) · all Texas FIPS codes |
| Population | 9,631 (167th of 254) |
| Land area | 380.9 sq mi (243rd largest; + 39.4 sq mi water) |
| People per sq mi | 25.3 |
| Time zone | Central time (America/Chicago) |
| Median home value | $110,500 |
| Median property tax paid | $870 a year (about 0.79% of the median home value: our calculation, not an official rate) |
| Official website | www.co.marion.tx.us |
What counties border Marion County?
Marion County shares a border with 5 counties:
- Caddo Parish, LA
- Cass County
- Harrison County
- Morris County
- Upshur County
What cities and towns are in Marion County?
1 places with 1,000+ people have residents here; together they hold about 22% of the county's population. The rest live in smaller communities and rural areas.
| Place | Population | Residents in this county |
|---|---|---|
| Jefferson | 2,111 | 100.0% |
CDP = census-designated place: a named community with no city government.
What ZIP codes are in Marion County?
7 ZIP code areas with residents touch Marion County; the ones marked * cross into another county.
Mailing names in Marion County that are not cities
These names appear in addresses here but are not Census places: Diana.
Check an exact address with the address lookup, look up a ZIP code, or see how to confirm your county with official records.
Sources: Census TIGER/Line 2024 (boundary, area, neighbors); ACS 2019-2023 5-year (population, home value, taxes paid); Wikidata, CC0 (seat, website); timezone-boundary-builder (time zone). Data as of November 1, 2026. Not affiliated with any government agency.
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