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US ZIP Code Profile

ZIP Code 33803
Lakeland, Florida

ZIP code 33803 is in Lakeland, located in Polk County, Florida, within the Lakeland-Winter Haven metro area. Its 2020 Census population was 29,082. The estimated median adjusted gross income per tax return is $45,007, and about 7% of filers report $200,000 or more.

2020 Population
29,082
Census ZCTA
County
Polk
FIPS 12105
Median income (est.)
$45,007
IRS SOI 2022
Land Area
15.581 mi²
+ 1.327 mi² water

01Location & Geography

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

Primary CityLakeland, FL
CountyPolk County (FIPS 12105)
StateFlorida (FIPS 12)
Metro Area (MSA)Lakeland-Winter Haven, FL Metro Area (29460)
Census Region / DivisionSouth Region · South Atlantic Division
Coordinates28.009357, -81.93266
Land / Water Area15.581 mi² land · 1.327 mi² water

02Income & Economics

Distribution of the 13,510 individual tax returns filed in 33803 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
28.5%
$25K–$50K
26.9%
$50K–$75K
16.4%
$75K–$100K
8.4%
$100K–$200K
12.7%
$200K+
7.2%
The $200,000+ bracket accounts for 54% of 33803's total adjusted gross income, from 7% of returns — a concentration that drives the gap between the median ($45,007) 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 33803's IRS income metrics, 2020–2022.

Median income (2021→2022)
$45,007
▲ 7.2%
Filers earning $200K+
7.2%
▲ 0.7 pt
Total filers
13,510
▲ 0.7%
GET /zipc/v2/zipcodes/33803/soi?year=… $39K 2020 $42K 2021 $45K 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 33803 ZCTA.

2000
26,994
 
2010
27,094
▲ +0.4%
2020
29,082
▲ +7.3%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 33803. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 33803

Lakeland and its immediate neighbors, sorted by distance.

3 mi
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Distance from 33803 to any ZIP

Enter a 5-digit ZIP to calculate the distance.

06USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number114920
City AliasesLakeland

07Frequently Asked Questions

What county is ZIP code 33803 in?

ZIP code 33803 is in Polk County, Florida (county FIPS code 12105).

What city is ZIP code 33803?

The primary USPS city for 33803 is Lakeland, FL.

What metro area (MSA) is 33803 in?

33803 is part of the Lakeland-Winter Haven, FL Metro Area (MSA code 29460).

What is the population of ZIP code 33803?

The 2020 Census population of 33803 was 29,082 residents.

What is the median income in ZIP code 33803?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 33803 is about $45,007, with around 7% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.