Postal Codes

77617 ZIP Code

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ZIP code 77617 covers Gilchrist, Texas.

Median age
67.428.7 points above the US average
Poverty rate
0%12.4 points below the US average
Degree or higher
18.4%16.6 points below the US average
Time zone
Central UTC-06:00observes daylight saving time

Where 77617 is

Gilchrist, Texas — the area the Census Bureau draws for this ZIP code. ZIP codes are sets of delivery routes rather than areas, so this is the Census approximation of one, not a Postal Service boundary.

People and households

American Community Survey 2019–2023 five-year estimates

Median age67.4
Born outside the US0%
Speaks a language other than English at home15.8%
White (non-Hispanic)100%
Black (non-Hispanic)0%
Asian (non-Hispanic)0%
Hispanic or Latino0%
Veterans26.3%
Income and poverty

American Community Survey 2019–2023 five-year estimates

Poverty rate0%
Housing

American Community Survey 2019–2023 five-year estimates

Vacant homes79%
Median year built2007

What the homes are

Detached house61.9%
2 to 4 units6.7%
Mobile home22.9%
Boat, RV or van8.6%
Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Bachelor's degree or higher18.4%
High school diploma or higher73.7%
Health

CDC PLACES 2025 release, model-based estimates. These are modelled small-area estimates for adults, not counts of diagnosed cases.

Obesity37.9% 4.5 pts above the national average of 33.4%
Diagnosed diabetes15.4% 3.4 pts above the national average of 12%
Currently smokes18.7% 5.5 pts above the national average of 13.2%
High blood pressure43.4% 9.3 pts above the national average of 34.1%
Fair or poor general health23.2% 2.9 pts above the national average of 20.3%
No health insurance (18–64)9.7% 1.6 pts below the national average of 11.3%
Depression25.6% 3.7 pts above the national average of 21.9%
No leisure-time physical activity28% 2.6 pts above the national average of 25.4%
Arthritis32.5% 7.4 pts above the national average of 25.1%
Binge drinking16.9% 0.9 pts above the national average of 16%
Taking blood pressure medication80.1% 5.4 pts above the national average of 74.7%
Cancer (non-skin)9.2% 1.5 pts above the national average of 7.7%
Current asthma11.2% 0.8 pts above the national average of 10.4%
Coronary heart disease8% 1.8 pts above the national average of 6.2%
Routine check-up in past year76.9% same as the national average of 76.7%
Cholesterol screening88.9% 3 pts above the national average of 85.9%
Cognitive disability15.6% 0.8 pts above the national average of 14.8%
Colorectal screening63.8% 0.5 pts below the national average of 64.3%
COPD10% 3.4 pts above the national average of 6.6%
Visited a dentist55.5% 5.8 pts below the national average of 61.3%
Any disability34% 3.3 pts above the national average of 30.7%
Hearing disability8% 1.3 pts above the national average of 6.7%
High cholesterol41.4% 5.2 pts above the national average of 36.2%
Independent living disability9.6% 1.2 pts above the national average of 8.4%
Mammography use70% 5.9 pts below the national average of 75.9%
Poor mental health (14+ days)18.7% 1.9 pts above the national average of 16.8%
Mobility disability18.5% 4.5 pts above the national average of 14%
Poor physical health (14+ days)16.9% 3.4 pts above the national average of 13.5%
Self-care disability5.2% 1.2 pts above the national average of 4%
Sleeps under 7 hours38.9% 2.5 pts above the national average of 36.4%
Stroke4.4% 1 pts above the national average of 3.4%
All natural teeth lost7.6% 5.4 pts below the national average of 13%
Vision disability5.7% same as the national average of 5.6%
Natural hazard risk

FEMA National Risk Index, estimated for this ZIP code from census tract data — the NRI is not published per ZIP.

Overall riskHigher than 95.4% of US census tracts
FEMA ratingRelatively High
Expected annual loss93.7 out of 100
Community resilience96.3 out of 100

By hazard

Score is out of 100 and is the area-weighted average across the census tracts this ZIP code covers. The rating beside it is the highest any one of those tracts carries.

Coastal flooding99.6Very High at its worst in this ZIP code
Wildfire97.7Relatively High at its worst in this ZIP code
Hurricane95.4Relatively High at its worst in this ZIP code
Cold wave94Relatively High at its worst in this ZIP code
River flooding90.1Relatively High at its worst in this ZIP code
Drought83.6Relatively Low at its worst in this ZIP code
Lightning81.1Relatively High at its worst in this ZIP code
Tornado78.1Relatively High at its worst in this ZIP code
Ice storm75.1Relatively Moderate at its worst in this ZIP code
Heat wave53Relatively Low at its worst in this ZIP code
Hail52.6Relatively Low at its worst in this ZIP code
Landslide40.8Very Low at its worst in this ZIP code
Strong wind31.5Relatively Low at its worst in this ZIP code
Winter weather17.8Very Low at its worst in this ZIP code
Earthquake11.8Very Low at its worst in this ZIP code
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Compared with Texas and the United States

State and national columns are figures for those areas, not for this ZIP code. American Community Survey 2019–2023 five-year estimates

This ZIPTexasUnited States
Median household income$76,292$78,538
Income per person$39,446$43,289
Poverty rate0%13.8%12.4%
Median home value$260,400$303,400
Median gross rent$1,339$1,348
Homeownership62.6%65%
Bachelor's degree or higher18.4%33.1%35%
Unemployment rate5.1%5.2%
Works from home12.8%13.5%
Born outside the US0%17.2%13.9%
Median age67.435.538.7
Climate

NOAA US Climate Normals 1991-2020, from the nearest weather station with a full year of records. The station and its distance are named above, because a station forty kilometres away describes somewhere else.

Weather stationANAHUAC, TX US33.2 km away
Rain in a year60 in
Snow in a year0 in

Average high and low by month

January61.6°F / 43.2°F4.59 in rain
February65.7°F / 46.8°F3.07 in rain
March71.3°F / 52.9°F3.63 in rain
April76.7°F / 58.9°F4.41 in rain
May83.2°F / 66.6°F5.39 in rain
June88.7°F / 72.8°F5.84 in rain
July90.7°F / 75.1°F5.68 in rain
August91.5°F / 74.4°F7.02 in rain
September87.5°F / 69.8°F7.02 in rain
October80.9°F / 60.1°F4.75 in rain
November71.5°F / 50.8°F3.85 in rain
December63.8°F / 44.5°F4.47 in rain, 0.2 in snow
Access to food

USDA Food Access Research Atlas, estimated for this ZIP code from census tract data. Each figure is the share of the ZIP code's land area that falls in a tract carrying that flag.

Low income and far from a supermarketNone of this ZIP code
Far from a supermarketNone of this ZIP code
No vehicle and far from a supermarketNone of this ZIP code
School districts

NCES Geographic Relationship File 2025, which states the association between each district and each ZIP code tabulation area directly. Elementary and secondary districts can cover the same ground, so shares need not total 100%.

High Island Independent School District100% of this ZIP code's land area
Community and walkability

CDC/ATSDR Social Vulnerability Index 2022 and the EPA National Walkability Index, both estimated for this ZIP code from census tract data. Vulnerability figures are national percentile ranks, not measurements.

Overall social vulnerability38more vulnerable than 38% of US census tracts
Socioeconomic status42more vulnerable than 42% of US census tracts
Household characteristics69more vulnerable than 69% of US census tracts
Racial and ethnic minority status32more vulnerable than 32% of US census tracts
Housing type and transport22more vulnerable than 22% of US census tracts
Walkability5.2 out of 20Least walkable
Nearby ZIP codes

The closest ZIP codes by centre point, which is not the same as sharing a border.

77623 High Island, TX5.4 km away
77514 Anahuac, TX19.2 km away
77650 Port Bolivar, TX23 km away
77661 Stowell, TX29.8 km away
77665 Winnie, TX35.1 km away
77553 Galveston, TX37.9 km away
77555 Galveston, TX38 km away
77592 Texas City, TX38 km away
Location, counties and time zone

County shares from Census 2020 ZCTA relationship files. Time zone from the USDOT National Transportation Atlas, which renders the boundaries written into 49 CFR Part 71.

Galveston County100% of this ZIP code's land area
Time zoneCentral (UTC-06:00 standard)
Daylight saving timeObserved
Land area5.22 sq mi
Water area1.72 sq mi
Latitude, longitude29.5230, -94.4755

Figures are published for this ZIP code or its Census tabulation area unless a section says otherwise. Estimates whose margin of error made them unreliable are omitted rather than shown. Sources: US Census Bureau, CDC, IRS.

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