Zip Code 77377 — Tomball, TX
77377 is a ZIP Code associated with Tomball, TX, located within Harris. 77377 ranks #40 out of 132 ZIP codes in Harris County by population (and #215 out of 1,990 in TX). The area supports an estimated population of 41,680 residents across Data Pending housing units, with a population density of 456.7 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (30.061410, -95.676080)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 77377 |
| Primary City | Tomball |
| State / Province | TX |
| County | Harris |
| Total Population | 41,680 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 456.7 people/sq mi |
| Timezone | America/Chicago |
How 77377 Compares
| Metric | ZIP 77377 | Harris County | TX State Average |
|---|
| Population | 41,680 | 4,851,657 (Total) | 30,188,035 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 456.7 /sq mi | -- | -- |
| County Pop Rank | #40 of 132 | -- | -- |
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 →