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US ZIP Code Profile

ZIP Code 77566
Lake Jackson, Texas

ZIP code 77566 is in Lake Jackson, located in Brazoria County, Texas, within the Houston-The Woodlands-Sugar Land metro area. Its 2020 Census population was 30,538. The estimated median adjusted gross income per tax return is $61,802, and about 10% of filers report $200,000 or more.

2020 Population
30,538
Census ZCTA
County
Brazoria
FIPS 48039
Median income (est.)
$61,802
IRS SOI 2022
Land Area
23.67 mi²
+ 4.267 mi² water

01Location & Geography

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

Primary CityLake Jackson, TX
CountyBrazoria County (FIPS 48039)
StateTexas (FIPS 48)
Metro Area (MSA)Houston-The Woodlands-Sugar Land, TX Metro Area (26420)
Census Region / DivisionSouth Region · West South Central Division
Coordinates29.052738, -95.47435
Land / Water Area23.67 mi² land · 4.267 mi² water

02Income & Economics

Distribution of the 14,000 individual tax returns filed in 77566 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
24.3%
$25K–$50K
19.1%
$50K–$75K
14.1%
$75K–$100K
10.5%
$100K–$200K
22.6%
$200K+
9.5%
The $200,000+ bracket accounts for 47% of 77566's total adjusted gross income, from 10% of returns — a concentration that drives the gap between the median ($61,802) 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 77566's IRS income metrics, 2020–2022.

Median income (2021→2022)
$61,802
▲ 8.5%
Filers earning $200K+
9.5%
▲ 1.2 pt
Total filers
14,000
▼ 1.1%
GET /zipc/v2/zipcodes/77566/soi?year=… $54K 2020 $57K 2021 $62K 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 77566 ZCTA.

2000
28,099
 
2010
28,739
▲ +2.3%
2020
30,538
▲ +6.3%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number484875
City AliasesLake Jackson, Richwood

06Frequently Asked Questions

What county is ZIP code 77566 in?

ZIP code 77566 is in Brazoria County, Texas (county FIPS code 48039).

What city is ZIP code 77566?

The primary USPS city for 77566 is Lake Jackson, TX.

What metro area (MSA) is 77566 in?

77566 is part of the Houston-The Woodlands-Sugar Land, TX Metro Area (MSA code 26420).

What is the population of ZIP code 77566?

The 2020 Census population of 77566 was 30,538 residents.

What is the median income in ZIP code 77566?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 77566 is about $61,802, 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.