Residential delivery area · Texas
ZIP Code 77331: Coldspring, TX
ZIP code 77331 uses the postal name Coldspring, Texas and lies entirely in San Jacinto County (Census 2020 ZIP-county file). About 7,600 people live there (Census Bureau, ACS 2020-2024). Median household income is $62,321 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Cape Royale (1%) and Coldspring (1%); 98% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Coldspring · its only residential ZIP
- County
- San Jacinto County
- Census places
- Cape Royale (1%) census-designated place; Coldspring (1%)
- Metro area
- Houston-Pasadena-The Woodlands, TX
- House district
- TX-8 119th Congress
- State
- Texas
- Time zone
- Central
- Land area
- 171.1 sq mi · 44 people per sq mi
Where is ZIP code 77331?
77331 centers on 30.618°, -95.184° and covers 171.1 square miles of land plus 22.7 of water. It borders 10 ZIP codes: 77364, 77359, 77328, 77371, 77378, 77335, 77358, 77360, 77340, 77351.
The map draws ZIP code areas only. For the streets inside 77331, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 77331 compare with the rest of San Jacinto County?
| Measure | 77331 | In San Jacinto County | In TX |
|---|---|---|---|
| People (ACS 2020-2024) | 7,556 | 5th of 8 | 899th of 1,990 |
| Median household income | $62k | 5th of 6 | 794th of 1,172 |
| Median home value | $246k | 1st of 6 | 535th of 1,172 |
Its median household income is higher than in 34% of U.S. residential ZIP codes, and it is denser than 40% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 77331?
The 2020 Census counted 6,953 people in 77331; the ACS, which samples households over 2020-2024, estimates 7,556. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 7,556
- 2020 Census count
- 6,953
- Households
- 3,188
- Median age
- 50.1
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 77331?
Of the 7,556 people the ACS estimates in 77331, 15.2% are under 18 and 30.3% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (73.9%), then Black (not Hispanic) (16.2%).
- Under 1815.2%
- 18 to 6454.5%
- 65 and older30.3%
- White, not Hispanic73.9%
- Black, not Hispanic16.2%
- Hispanic or Latino5.7%
- Other or two or more3.6%
- Asian, not Hispanic0.6%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 77331 earn?
Median household income is $62,321 (ACS 2020-2024), the 5th highest of the 6 ranked ZIP codes in San Jacinto County.
- Median household income
- $62,321±$15,404
- Income per person
- $33,706
- Below the poverty line
- 17.9%
- Unemployed (of the labor force)
- 8.6%
- Adults 25+ with a bachelor's degree
- 20.0%
- Adjusted gross income per tax return, 2022
- $85,8393,220 returns; wages 53% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 77331?
FHFA's house price index for 77331, built from repeat sales and appraisals of the same homes, rose 135% from 2015 to 2025 and rose 71% from 2020 to 2025, and moved +11.2% in 2025.
- Median home value (owners' estimate)
- $246,200
- Median gross rent
- $729
- Homes owned by their occupants
- 86.9%
- Housing units
- 4,972
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 77331?
81 business establishments had a location in this ZIP code in 2023, 10 fewer than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services15
- Construction12
- Retail trade12
- Health care and social assistance10
- Other services (except public administration)8
- Accommodation and food services7
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 77331?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 77364 | Pointblank | 2,178 | $63k | 10.9 mi |
| 77359 | Oakhurst | 683 | $56k | 12.8 mi |
| 77328 | Cleveland | 17,208 | $62k | 14.7 mi |
| 77371 | Shepherd | 7,800 | $84k | 14.8 mi |
| 77378 | Willis | 17,629 | $71k | 15.3 mi |
| 77335 | Goodrich | 2,468 | $53k | 15.8 mi |
| 77358 | New Waverly | 5,087 | $60k | 16.2 mi |
| 77360 | Onalaska | 6,223 | $60k | 16.3 mi |
| 77340 | Huntsville | 37,517 | $49k | 20.8 mi |
| 77351 | Livingston | 37,143 | $67k | 22.9 mi |
| 77334 | Dodge | 197 | – | 16.0 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.