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US ZIP Code Profile

ZIP Code 75603
Longview, Texas

ZIP code 75603 is in Longview, located in Gregg County, Texas, within the Longview metro area. Its 2020 Census population was 5,784. The estimated median adjusted gross income per tax return is $40,942, and about 4% of filers report $200,000 or more.

2020 Population
5,784
Census ZCTA
County
Gregg
FIPS 48183
Median income (est.)
$40,942
IRS SOI 2022
Land Area
46.279 mi²
+ 2.877 mi² water

01Location & Geography

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

Primary CityLongview, TX
CountyGregg County (FIPS 48183)
StateTexas (FIPS 48)
Metro Area (MSA)Longview, TX Metro Area (30980)
Census Region / DivisionSouth Region · West South Central Division
Coordinates32.40305, -94.711174
Land / Water Area46.279 mi² land · 2.877 mi² water

02Income & Economics

Distribution of the 2,700 individual tax returns filed in 75603 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
33.7%
$25K–$50K
25.6%
$50K–$75K
14.1%
$75K–$100K
8.9%
$100K–$200K
13.3%
$200K+
4.4%
The $200,000+ bracket accounts for 32% of 75603's total adjusted gross income, from 4% of returns — a concentration that drives the gap between the median ($40,942) 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 75603's IRS income metrics, 2020–2022.

Median income (2021→2022)
$40,942
▲ 5.8%
Filers earning $200K+
4.4%
▲ 0.4 pt
Total filers
2,700
▼ 1.1%
GET /zipc/v2/zipcodes/75603/soi?year=… $38K 2020 $39K 2021 $41K 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 75603 ZCTA.

2000
5,401
 
2010
5,456
▲ +1.0%
2020
5,784
▲ +6.0%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number485305
City AliasesLakeport, Longview

06Frequently Asked Questions

What county is ZIP code 75603 in?

ZIP code 75603 is in Gregg County, Texas (county FIPS code 48183).

What city is ZIP code 75603?

The primary USPS city for 75603 is Longview, TX.

What metro area (MSA) is 75603 in?

75603 is part of the Longview, TX Metro Area (MSA code 30980).

What is the population of ZIP code 75603?

The 2020 Census population of 75603 was 5,784 residents.

What is the median income in ZIP code 75603?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 75603 is about $40,942, with around 4% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.