| ZIP Codes: | 7 ZIP Codes (5 Standard, 2 PO Box, 0 Unique) [See All] |
| Area Codes: | 281 / 346 / 409 / 713 / 832 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:13:52 PM |
| Population: | 45,140 [See All] |
| FIPS: | 48071 |
| CBSA: | Houston-Pasadena-The Woodlands, TX |
| Land Area: | 685 sq mi |
| Water Area: | 29 sq mi |
| Coordinates: | 29.7959, -94.6358 |
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45,140 residents live across 7 ZIPs covering 685 sq mi, served by 7 distinct USPS-recognized cities.
Population moved from 31,684 to 45,140 from 2014 to 2024 — a +42.5% change. 4 ZIPs gained residents, 3 lost.
The county's wealthiest ZIP 77523 (Baytown, $124,188 median) and poorest ZIP 77560 (Hankamer, $75,938) are 16.5 miles apart — a 1.6× income gap across local geography.
Median home values vary 2.2× across this county — from $169,900 in 77665 (Winnie) to $372,100 in 77523 (Baytown).
Density varies 18× across the county — from 16 people/sq mi in 77597 (Wallisville) to 281 in 77523 (Baytown).
Educational attainment ranges from 3.1% bachelor's+ in 77560 (Hankamer) to 28.0% in 77523 (Baytown) — the breadth of educational profiles across the area.
Within Texas, this is the #71 most populous of 254 counties and ranks #21 for median household income with the #8 fastest decade growth .
On the national stage, Chambers County is and #22 for decade growth .
Weighted by population, the typical household earns about $110,314 across the county — reflecting what a typical resident sees, not a simple ZIP average.
22.1% of adults age 25+ hold a bachelor's degree or higher (6,430 of 29,120 reporting).
5 Standard delivery, 2 PO Box only, 0 single-entity Unique ZIPs serve this county.
Chambers County grew 42.5% over the past decade — concentrated in 3 high-growth ZIPs:
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 |
|---|---|---|---|---|---|---|
| 77523 | Baytown | Standard | 30,186 | $124,188 | 107.5 | 64.3% |
| 77665 | Winnie | Standard | 7,511 | $78,590 | 297.3 | 29.4% |
| 77514 | Anahuac | Standard | 5,480 | $85,139 | 212.8 | 23.7% |
| 77560 | Hankamer | Standard | 1,238 | $75,938 | 27.7 | 85.3% |
| 77597 | Wallisville | Standard | 623 | — | 39.3 | -10.2% |
| 77661 | Stowell | PO Box | 102 | — | 0.0 | -91.5% |
| 77580 | Mont Belvieu | PO Box | 0 | — | 0.0 | -100.0% |