PlainZIP

Rock Island, TX · standard

ZIP Code 77470

Colorado County, Texas - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

338
5/sq mi
$43,149
Median income
$122,800
Median home value
10.4%
Bachelor's or higher

The verdict

Rock Island pairs one of the lowest household incomes in the country with among the most affordable home values nationally, in a rural, homeowner-dominated area.

8th pct
household income, US ZIPs
18th pct
home value, US ZIPs
5
people per sq mi
95%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 77470 against every reporting US ZIP.

ZIP code 77470 is a sparsely populated ZIP (a standard USPS delivery area) in Rock Island, Colorado County, Texas, home to just 338 residents across 73.5 square miles, a density of 5 people per square mile, in the Chicago time zone.

ZIP 77470 reports a modest median household income of $43,149 (43% below the Texas average), while per-capita income is $18,657. Poverty here runs at 8.9%, with unemployment measured at 9.3%. The typical home here is valued at $122,800 (50% below the state average); renters pay a median of - monthly, and 94.7% of units are owner-occupied.

Formal educational attainment runs low here: just 10.4% of adults hold a bachelor's degree or higher, the median age is 49.2, and the average commute is -. A geography-based comparison follows: 3 ZIP codes within about 10 miles of 77470, plus 6 more within Colorado County, give a clearer read than the national average alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 77470, Rock Island, TX · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

338

Population

73.5

Area (sq mi)

5

People / sq mi

Chicago

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 77470?

49.2

Median Age

65.0%

Male

35.0%

Female

0.0%

Foreign-Born

White 98.3%
African American 0.0%
Asian 0.0%
American Indian or Alaska Native 1.7%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 0.0%
Hispanic or Latino 1.2%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$43,149

Median Household Income

-43% vs state

$18,657

Per Capita Income

8.9%

Poverty Rate

9.3%

Unemployment Rate

How ZIP 77470 ranks nationally

Rock Island, TX household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$43,149 8th percentile higher than 8% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). This entry sits in this band. $60,000–$80,000: 9,980 US ZIPs (33%). Above this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 55.3%
Bachelor's Degree or Higher 10.4%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

267

Total Housing Units

187

Occupied Units

80

Vacant Units

2.21

Avg Household Size

Occupancy Type

Owner 94.7%
Renter 5.3%

$122,800

Median Home Value

-50% vs state

1980

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

Nearby ZIP Codes

Want a side-by-side? Compare 77470 vs 77412 →

ZIP 77470 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 77470 ranks #3 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 77470 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 77470 ranks #3 of 3 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
77412 Altair, TX 106 7.6 mi
77475 Sheridan, TX 773 7.0 mi
77442 Garwood, TX 1,137 7.9 mi

More ZIP Codes in Colorado County

78934 standard
Columbus, TX
Pop: 6,712
77434 standard
Eagle Lake, TX
Pop: 4,816
78962 standard
Weimar, TX
Pop: 4,733
78933 standard
Cat Spring, TX
Pop: 1,433
77442 standard
Garwood, TX
Pop: 1,137
78935 standard
Alleyton, TX
Pop: 978

Related Areas

Colorado County Rock Island, TX Texas

Frequently Asked Questions

What county is ZIP code 77470 in? ▼
ZIP code 77470 (Rock Island) is located in Colorado County, Texas. Colorado County contains multiple ZIP codes, see the full list at /counties/colorado-tx.
What is the population of ZIP code 77470? ▼
ZIP code 77470 in Rock Island, TX has a population of 338 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 77470? ▼
The median household income in ZIP 77470 is $43,149, which is 43% below the national average of $76,288.
What is the average home value in ZIP 77470? ▼
The median home value in ZIP 77470 is $122,800, which is 56% below the national average of $278,155.
What is the demographic makeup of ZIP 77470? ▼
The largest racial group in ZIP 77470 is White at 98.3%. Hispanic or Latino residents make up 1.2% of the population.
What is the education level in ZIP code 77470? ▼
In ZIP code 77470, 55.3% of residents aged 25+ have a high school diploma or higher, and 10.4% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 77470? ▼
In ZIP code 77470, approximately 94.7% of occupied housing units are owner-occupied and 5.3% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 77470? ▼
The poverty rate in ZIP code 77470 is 8.9% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.