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US ZIP Code Profile

ZIP Code 77381
Spring, Texas

ZIP code 77381 is in Spring, located in Montgomery County, Texas, within the Houston-The Woodlands-Sugar Land metro area. Its 2020 Census population was 35,191. The estimated median adjusted gross income per tax return is $102,869, and about 27% of filers report $200,000 or more.

2020 Population
35,191
Census ZCTA
County
Montgomery
FIPS 48339
Median income (est.)
$102,869
IRS SOI 2022
Land Area
13.022 mi²
+ 0.161 mi² water

01Location & Geography

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

Primary CitySpring, TX
CountyMontgomery County (FIPS 48339)
StateTexas (FIPS 48)
Metro Area (MSA)Houston-The Woodlands-Sugar Land, TX Metro Area (26420)
Census Region / DivisionSouth Region · West South Central Division
Coordinates30.178247, -95.50096
Land / Water Area13.022 mi² land · 0.161 mi² water

02Income & Economics

Distribution of the 15,590 individual tax returns filed in 77381 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
19.6%
$25K–$50K
11.9%
$50K–$75K
9.8%
$75K–$100K
8.0%
$100K–$200K
23.5%
$200K+
27.2%
The $200,000+ bracket accounts for 76% of 77381's total adjusted gross income, from 27% of returns — a concentration that drives the gap between the median ($102,869) and the average.
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 77381's IRS income metrics, 2020–2022.

Median income (2021→2022)
$102,869
▲ 5.1%
Filers earning $200K+
27.2%
▲ 1.2 pt
Total filers
15,590
▲ 1.5%
GET /zipc/v2/zipcodes/77381/soi?year=… $89K 2020 $98K 2021 $103K 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 77381 ZCTA.

2000
35,952
 
2010
34,961
▼ -2.8%
2020
35,191
▲ +0.7%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortB
USPS Finance Number488565
City AliasesSpring, The Woodlands, Shenandoah

06Frequently Asked Questions

What county is ZIP code 77381 in?

ZIP code 77381 is in Montgomery County, Texas (county FIPS code 48339).

What city is ZIP code 77381?

The primary USPS city for 77381 is Spring, TX.

What metro area (MSA) is 77381 in?

77381 is part of the Houston-The Woodlands-Sugar Land, TX Metro Area (MSA code 26420).

What is the population of ZIP code 77381?

The 2020 Census population of 77381 was 35,191 residents.

What is the median income in ZIP code 77381?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 77381 is about $102,869, with around 27% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.