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US ZIP Code Profile

ZIP Code 33823
Auburndale, Florida

ZIP code 33823 is in Auburndale, located in Polk County, Florida, within the Lakeland-Winter Haven metro area. Its 2020 Census population was 33,733. The estimated median adjusted gross income per tax return is $41,921, and about 4% of filers report $200,000 or more.

2020 Population
33,733
Census ZCTA
County
Polk
FIPS 12105
Median income (est.)
$41,921
IRS SOI 2022
Land Area
31.097 mi²
+ 7.407 mi² water

01Location & Geography

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

Primary CityAuburndale, 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
Coordinates28.085735, -81.81373
Land / Water Area31.097 mi² land · 7.407 mi² water

02Income & Economics

Distribution of the 17,640 individual tax returns filed in 33823 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
31.1%
$25K–$50K
27.9%
$50K–$75K
15.2%
$75K–$100K
8.8%
$100K–$200K
13.4%
$200K+
3.5%
The $200,000+ bracket accounts for 22% of 33823's total adjusted gross income, from 4% of returns — a concentration that drives the gap between the median ($41,921) 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 33823's IRS income metrics, 2020–2022.

Median income (2021→2022)
$41,921
▲ 9.0%
Filers earning $200K+
3.5%
▲ 0.7 pt
Total filers
17,640
▲ 4.0%
GET /zipc/v2/zipcodes/33823/soi?year=… $36K 2020 $38K 2021 $42K 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 33823 ZCTA.

2000
26,485
 
2010
28,874
▲ +9.0%
2020
33,733
▲ +16.8%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number110390
City AliasesAuburndale

06Frequently Asked Questions

What county is ZIP code 33823 in?

ZIP code 33823 is in Polk County, Florida (county FIPS code 12105).

What city is ZIP code 33823?

The primary USPS city for 33823 is Auburndale, FL.

What metro area (MSA) is 33823 in?

33823 is part of the Lakeland-Winter Haven, FL Metro Area (MSA code 29460).

What is the population of ZIP code 33823?

The 2020 Census population of 33823 was 33,733 residents.

What is the median income in ZIP code 33823?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 33823 is about $41,921, 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.