Residential delivery area · Texas
ZIP Code 77470: Rock Island, TX
ZIP code 77470 uses the postal name Rock Island, Texas and lies entirely in Colorado County (Census 2020 ZIP-county file). About 410 people live there (Census Bureau, ACS 2020-2024). Median household income is $43,149 (Census Bureau, ACS 2020-2024). By Census place, 18% of its land lies in Rock Island (a census-designated place); 82% is outside any Census place.
- ACS2020-24
- Census2020
- Town
- Rock Island · its only residential ZIP
- County
- Colorado County
- Census places
- Rock Island census-designated place
- House district
- TX-10 119th Congress
- State
- Texas
- Time zone
- Central
- Land area
- 28.5 sq mi · 15 people per sq mi
Where is ZIP code 77470?
77470 centers on 29.534°, -96.533° and covers 28.5 square miles of land plus 0.4 of water. It borders 3 ZIP codes: 77442, 77475, 78934.
The map draws ZIP code areas only. For the streets inside 77470, 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 77470 compare with the rest of Colorado County?
| Measure | 77470 | In Colorado County | In TX |
|---|---|---|---|
| People (ACS 2020-2024) | 414 | 15th of 18 | 1,633rd of 1,990 |
| Median household income | $43k | not ranked | not ranked |
| Median home value | $123k | not ranked | not ranked |
77470's income and home value are not ranked: it has fewer than 1,000 residents (414). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
It is denser than 21% of 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 77470?
The 2020 Census counted 276 people in 77470; the ACS, which samples households over 2020-2024, estimates 414. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 414±258 (90% margin)
- 2020 Census count
- 276
- Households
- 187
- Median age
- 49.2
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 77470?
Of the 414 people the ACS estimates in 77470, 23.2% are under 18 and 22.7% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (97.1%).
- Under 1823.2%
- 18 to 6454.1%
- 65 and older22.7%
- White, not Hispanic97.1%
- Other or two or more1.7%
- Hispanic or Latino1.2%
- Black, not Hispanic0.0%
- Asian, not Hispanic0.0%
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 77470 earn?
Median household income is $43,149 (ACS 2020-2024).
- Median household income
- $43,149±$8,239
- Income per person
- $18,657
- Below the poverty line
- 8.9%
- Unemployed (of the labor force)
- 9.3%
- Adults 25+ with a bachelor's degree
- 10.4%
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 77470?
- Median home value (owners' estimate)
- $122,800
- Median gross rent
- –
- Homes owned by their occupants
- 94.7%
- Housing units
- 267
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001).
Which ZIP codes are next to 77470?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 77442 | Garwood | 1,123 | $71k | 7.0 mi |
| 77475 | Sheridan | 431 | $63k | 8.6 mi |
| 78934 | Columbus | 6,731 | $58k | 11.9 mi |
| 77412 | Altair | 6 | – | 4.8 mi (near) |
| 78943 | Glidden | 886 | $99k | 12.0 mi (near) |
| 77434 | Eagle Lake | 3,970 | $72k | 12.9 mi (near) |
| 78935 | Alleyton | 734 | – | 12.9 mi (near) |
| 77460 | Nada | 76 | – | 13.0 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.