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US ZIP Code Profile

ZIP Code 33843
Frostproof, Florida

ZIP code 33843 is in Frostproof, located in Polk County, Florida, within the Lakeland-Winter Haven metro area. Its 2020 Census population was 11,864. The estimated median adjusted gross income per tax return is $37,198, and about 2% of filers report $200,000 or more.

2020 Population
11,864
Census ZCTA
County
Polk
FIPS 12105
Median income (est.)
$37,198
IRS SOI 2022
Land Area
101.601 mi²
+ 14.952 mi² water

01Location & Geography

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

Primary CityFrostproof, 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
Coordinates27.720768, -81.533
Land / Water Area101.601 mi² land · 14.952 mi² water

02Income & Economics

Distribution of the 4,310 individual tax returns filed in 33843 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
36.0%
$25K–$50K
28.8%
$50K–$75K
15.8%
$75K–$100K
8.8%
$100K–$200K
8.8%
$200K+
1.9%
The $200,000+ bracket accounts for 17% of 33843's total adjusted gross income, from 2% of returns — a concentration that drives the gap between the median ($37,198) 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 33843's IRS income metrics, 2020–2022.

Median income (2021→2022)
$37,198
▲ 12.0%
Filers earning $200K+
1.9%
▲ 0.0 pt
Total filers
4,310
▲ 0.0%
GET /zipc/v2/zipcodes/33843/soi?year=… $31K 2020 $33K 2021 $37K 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 33843 ZCTA.

2000
10,668
 
2010
11,093
▲ +4.0%
2020
11,864
▲ +7.0%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number113195
City AliasesFrostproof

06Frequently Asked Questions

What county is ZIP code 33843 in?

ZIP code 33843 is in Polk County, Florida (county FIPS code 12105).

What city is ZIP code 33843?

The primary USPS city for 33843 is Frostproof, FL.

What metro area (MSA) is 33843 in?

33843 is part of the Lakeland-Winter Haven, FL Metro Area (MSA code 29460).

What is the population of ZIP code 33843?

The 2020 Census population of 33843 was 11,864 residents.

What is the median income in ZIP code 33843?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 33843 is about $37,198, with around 2% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.