ZIP code 77470
Where is ZIP code 77470?
Rock Island, Texas
Colorado County · PO Box only ZIP code
ZIP code 77470 belongs to Rock Island, Texas in Colorado County. 77470 is a PO Box only ZIP code: it is used for post office boxes at the Rock Island post office, not for street addresses. It is in the Central Time zone and uses area code 979. About 414 people live in the 77470 area, where the median household income is $43,149. The closest ZIP codes are 77442 (Garwood, 6.3 mi southeast), 77475 (Sheridan, 6.3 mi southwest) and 77412 (Altair, 7.8 mi east).
| ZIP code | 77470 |
|---|---|
| Type | PO Box only (no street delivery) |
| Status | Active |
| City | Rock Island |
| State | Texas (TX) |
| County | Colorado County |
| Time zone | Central Time · now |
| Area code | 979 |
| Coordinates | 29.5311, -96.5752 map |
| 3-digit prefix | 774 |
Population and income in 77470
| Population | 414 · lower than 85% of Texas ZIP codes |
|---|---|
| People per square mile | 15 · lower than 74% of Texas ZIP codes |
| Median age | 49.2 years · higher than 86% of Texas ZIP codes |
| Men / women | 65% / 35% |
| Median household income | $43,149 · lower than 93% of Texas ZIP codes |
| Income per person | $18,657 |
| Below the poverty line | 8.9% |
| Bachelor’s degree or higher | 10% of adults 25+ |
| Median home value | $122,800 · lower than 81% of Texas ZIP codes |
| Housing units | 267 |
| Households | 187 (2.21 people on average) |
| Owners / renters | 95% / 5.3% |
| Land area | 28.54 sq mi (plus 0.37 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 77470. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 77470
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 77442 | Garwood, TX | 6.3 mi SE | Standard |
| 77475 | Sheridan, TX | 6.3 mi SW | PO Box only |
| 77412 | Altair, TX | 7.8 mi E | PO Box only |
| 78943 | Glidden, TX | 11.7 mi N | Standard |
| 78934 | Columbus, TX | 12 mi N | Standard |
| 78935 | Alleyton, TX | 13.4 mi NE | Standard |
| 77986 | Sublime, TX | 13.5 mi W | Standard |
| 77460 | Nada, TX | 14.3 mi SE | PO Box only |
| 78962 | Weimar, TX | 14.9 mi NW | Standard |
| 77434 | Eagle Lake, TX | 14.9 mi E | Standard |
| 78951 | Oakland, TX | 16.1 mi W | PO Box only |
| 78933 | Cat Spring, TX | 18.8 mi NE | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 77470 or measure the distance to another ZIP code.
How to address mail to 77470
PO BOX 123
ROCK ISLAND TX 77470
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (77470-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 77470?
- 77470 is a Rock Island, Texas ZIP code.
- What county is 77470 in?
- ZIP code 77470 is in Colorado County, Texas.
- What time zone is ZIP code 77470 in?
- 77470 is in the Central Time zone (America/Chicago).
- What area code is 77470?
- Phone numbers in ZIP code 77470 use area code 979.
- What is the population of ZIP code 77470?
- About 414 people live in ZIP code 77470, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 77470?
- The median household income in 77470 is $43,149 a year, lower than 93% of Texas ZIP codes.
- Can I use 77470 for a street address?
- No. 77470 is only for PO Boxes. Street addresses in Rock Island use another ZIP code.
- What ZIP codes are near 77470?
- The nearest ZIP codes to 77470 are 77442 (Garwood, 6.3 miles), 77475 (Sheridan, 6.3 miles), 77412 (Altair, 7.8 miles) and 78943 (Glidden, 11.7 miles).