Zip Code 77360 — Onalaska, TX
77360 is a ZIP Code associated with Onalaska, TX, located within Polk. 77360 ranks #2 out of 8 ZIP codes in Polk County by population (and #958 out of 1,990 in TX). The area supports an estimated population of 6,223 residents across Data Pending housing units, with a population density of 72.9 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (30.847100, -95.113940)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 77360 |
| Primary City | Onalaska |
| State / Province | TX |
| County | Polk |
| Total Population | 6,223 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 72.9 people/sq mi |
| Timezone | America/Chicago |
How 77360 Compares
| Metric | ZIP 77360 | Polk County | TX State Average |
|---|
| Population | 6,223 | 52,590 (Total) | 30,188,035 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 72.9 /sq mi | -- | -- |
| County Pop Rank | #2 of 8 | -- | -- |
Nearby ZIP Codes
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →