| ZIP Codes: | 13 ZIP Codes (4 Standard, 9 PO Box, 0 Unique) [See All] |
| Area Codes: | 361 / 979 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:55:19 PM |
| Population: | 36,937 [See All] |
| FIPS: | 48321 |
| CBSA: | Bay City, TX |
| Land Area: | 1,147 sq mi |
| Water Area: | 143 sq mi |
| Coordinates: | 28.9015, -96.0337 |
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36,937 residents live across 13 ZIPs covering 1,147 sq mi, served by 12 distinct USPS-recognized cities.
Population moved from 37,007 to 36,937 from 2014 to 2024 — a -0.2% change. 6 ZIPs gained residents, 6 lost.
The county's wealthiest ZIP 77456 (Markham, $65,284 median) and poorest ZIP 77483 (Wadsworth, $31,761) are 12.1 miles apart — a 2.1× income gap across local geography.
Median home values vary 2.5× across this county — from $128,600 in 77456 (Markham) to $325,700 in 77457 (Matagorda).
Density varies 17722× across the county — from 9 people/sq mi in 77457 (Matagorda) to 162,093 in 77456 (Markham).
Educational attainment ranges from 7.7% bachelor's+ in 77419 (Blessing) to 23.2% in 77457 (Matagorda) — the breadth of educational profiles across the area.
Within Texas, this is the #83 most populous of 254 counties and ranks #198 for median household income .
Weighted by population, the typical household earns about $60,178 across the county — reflecting what a typical resident sees, not a simple ZIP average.
21.5% of adults age 25+ hold a bachelor's degree or higher (5,326 of 24,742 reporting).
4 Standard delivery, 9 PO Box only, 0 single-entity Unique ZIPs serve this county.
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 77414 | Bay City | Standard | 24,334 | $59,128 | 669.4 | 6.4% |
| 77465 | Palacios | Standard | 7,681 | $64,666 | 365.6 | 4.0% |
| 77482 | Van Vleck | Standard | 2,050 | $58,103 | 44.5 | -13.8% |
| 77456 | Markham | PO Box | 1,394 | $65,284 | 0.0 | 0.4% |
| 77419 | Blessing | PO Box | 609 | $51,641 | 9.5 | -61.7% |
| 77457 | Matagorda | PO Box | 353 | — | 38.6 | -35.1% |
| 77483 | Wadsworth | PO Box | 257 | $31,761 | 0.0 | -17.4% |
| 77428 | Collegeport | PO Box | 151 | — | 0.8 | — |
| 77415 | Cedar Lane | PO Box | 63 | $71,310 | 0.0 | 472.7% |
| 77440 | Elmaton | PO Box | 45 | — | 0.0 | — |
| 77458 | Midfield | PO Box | 0 | — | 14.1 | -100.0% |
| 77468 | Pledger | Standard | 0 | — | 4.1 | -100.0% |
| 77404 | Bay City | PO Box | — | — | 0.0 | — |