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US ZIP Code Profile

ZIP Code 77318
Willis, Texas

ZIP code 77318 is in Willis, located in Montgomery County, Texas, within the Houston-The Woodlands-Sugar Land metro area. Its 2020 Census population was 17,518. The estimated median adjusted gross income per tax return is $59,515, and about 10% of filers report $200,000 or more.

2020 Population
17,518
Census ZCTA
County
Montgomery
FIPS 48339
Median income (est.)
$59,515
IRS SOI 2022
Land Area
38.357 mi²
+ 12.046 mi² water

01Location & Geography

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

Primary CityWillis, 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
Coordinates30.439264, -95.52971
Land / Water Area38.357 mi² land · 12.046 mi² water

02Income & Economics

Distribution of the 9,640 individual tax returns filed in 77318 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
24.3%
$25K–$50K
20.4%
$50K–$75K
13.9%
$75K–$100K
10.3%
$100K–$200K
21.4%
$200K+
9.8%
The $200,000+ bracket accounts for 44% of 77318's total adjusted gross income, from 10% of returns — a concentration that drives the gap between the median ($59,515) 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 77318's IRS income metrics, 2020–2022.

Median income (2021→2022)
$59,515
▲ 8.9%
Filers earning $200K+
9.8%
▲ 1.1 pt
Total filers
9,640
▲ 5.6%
GET /zipc/v2/zipcodes/77318/soi?year=… $49K 2020 $55K 2021 $60K 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 77318 ZCTA.

2000
9,884
 
2010
14,281
▲ +44.5%
2020
17,518
▲ +22.7%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number489740
City AliasesPanorama Village, Willis

06Frequently Asked Questions

What county is ZIP code 77318 in?

ZIP code 77318 is in Montgomery County, Texas (county FIPS code 48339).

What city is ZIP code 77318?

The primary USPS city for 77318 is Willis, TX.

What metro area (MSA) is 77318 in?

77318 is part of the Houston-The Woodlands-Sugar Land, TX Metro Area (MSA code 26420).

What is the population of ZIP code 77318?

The 2020 Census population of 77318 was 17,518 residents.

What is the median income in ZIP code 77318?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 77318 is about $59,515, with around 10% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.