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US ZIP Code Profile

ZIP Code 78830
Big Wells, Texas

ZIP code 78830 is in Big Wells, located in Dimmit County, Texas. Its 2020 Census population was 509. The estimated median adjusted gross income per tax return is $32,500.

2020 Population
509
Census ZCTA
County
Dimmit
FIPS 48127
Median income (est.)
$32,500
IRS SOI 2022
Land Area
205.543 mi²
+ 0.612 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityBig Wells, TX
CountyDimmit County (FIPS 48127)
StateTexas (FIPS 48)
Census Region / DivisionSouth Region · West South Central Division
Coordinates28.524902, -99.50848
Land / Water Area205.543 mi² land · 0.612 mi² water

02Income & Economics

Distribution of the 210 individual tax returns filed in 78830 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
42.9%
$25K–$50K
23.8%
$50K–$75K
19.1%
$75K–$100K
0.0%
$100K–$200K
14.3%
$200K+
0.0%
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 78830's IRS income metrics, 2020–2022.

Median income (2021→2022)
$32,500
▲ 18.2%
Filers earning $200K+
0.0%
▲ 0.0 pt
Total filers
210
▲ 0.0%
GET /zipc/v2/zipcodes/78830/soi?year=… $29K 2020 $28K 2021 $32K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 78830 ZCTA.

2000
759
 
2010
786
▲ +3.6%
2020
509
▼ -35.2%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortC
USPS Finance Number480785
City AliasesBig Wells

06Frequently Asked Questions

What county is ZIP code 78830 in?

ZIP code 78830 is in Dimmit County, Texas (county FIPS code 48127).

What city is ZIP code 78830?

The primary USPS city for 78830 is Big Wells, TX.

What is the population of ZIP code 78830?

The 2020 Census population of 78830 was 509 residents.

What is the median income in ZIP code 78830?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78830 is about $32,500. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.