Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/TX/ROCK-ISLAND

Rock Island ZIP code, Texas

The ZIP code for Rock Island, TX is 77470, and its area code is 979.

USPS city name
1 ZIP code
Population
414
Area code
979
State
Texas

NANPA lists no telephone rate centre for Rock Island itself, so these are the area codes of the nearest one, Garwood (7.0 miles). A town on an area-code boundary can differ from its neighbour.

Rock Island in numbers

About 414 people live in Rock Island, in 187 households. The median household income is $43,149 a year, 45% below the Texas median of $78,476 (US: $80,734). The median owner-occupied home is valued at $122,800 (57% below the Texas median). The median age is 49.2; 10.4% of adults 25 and over hold a bachelor's degree or higher (33.8% across Texas); the average commute takes 60 minutes.

Population414Rock Island414
Households187Rock Island187
Median age49.2Rock Island49.2Texas35.6US 38.9
Median household income$43,149Rock Island$43,149Texas$78,476US $80,734
Median home value$122,800Rock Island$122,800Texas$283,800US $332,700
Bachelor's degree or higher10.4%Rock Island10.4%Texas33.8%US 35.7%
Mean commute60.3 minRock Island60.3 minTexas26.7 minUS 26.4 min
Population density83 / sq miRock Island83 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Rock Island CDP. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Rock Island

ZIP codes with the USPS city name Rock Island
ZIP City Type Population Median income Median home
77470 Rock Island , TX Standard 414 $43,149 $122,800

Map of Rock Island ZIP codes

77470

The ZIP codes of Rock Island, TX, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Rock Island

The nearest larger towns are Glidden (1,071 people, 13 mi), Columbus (3,860 people, 13 mi) and Eagle Lake (3,485 people, 15 mi).

Towns near Rock Island
TownPopulationDistance
Columbus 3,860 13.1 mi
Eagle Lake 3,485 15.2 mi
Weimar 2,928 18.0 mi
Hallettsville 2,755 23.2 mi
Schulenburg 2,768 23.5 mi
El Campo 12,202 28.0 mi
Sealy 7,053 29.8 mi

More nearby: every ZIP code in Colorado County · Texas ZIP codes

Cite this page

zipcodes.pro. “Rock Island, TX ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/tx/rock-island

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