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US ZIP Code Profile

ZIP Code 33778
Largo, Florida

ZIP code 33778 is in Largo, located in Pinellas County, Florida, within the Tampa-St. Petersburg-Clearwater metro area. Its 2020 Census population was 15,068. The estimated median adjusted gross income per tax return is $43,782, and about 4% of filers report $200,000 or more.

2020 Population
15,068
Census ZCTA
County
Pinellas
FIPS 12103
Median income (est.)
$43,782
IRS SOI 2022
Land Area
3.731 mi²
+ 0.174 mi² water

01Location & Geography

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

Primary CityLargo, FL
CountyPinellas County (FIPS 12103)
StateFlorida (FIPS 12)
Metro Area (MSA)Tampa-St. Petersburg-Clearwater, FL Metro Area (45300)
Census Region / DivisionSouth Region · South Atlantic Division
Coordinates27.88862, -82.79854
Land / Water Area3.731 mi² land · 0.174 mi² water

02Income & Economics

Distribution of the 7,200 individual tax returns filed in 33778 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
29.9%
$25K–$50K
26.8%
$50K–$75K
15.4%
$75K–$100K
9.9%
$100K–$200K
13.9%
$200K+
4.2%
The $200,000+ bracket accounts for 23% of 33778's total adjusted gross income, from 4% of returns — a concentration that drives the gap between the median ($43,782) 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 33778's IRS income metrics, 2020–2022.

Median income (2021→2022)
$43,782
▲ 4.5%
Filers earning $200K+
4.2%
▲ 0.5 pt
Total filers
7,200
▲ 1.1%
GET /zipc/v2/zipcodes/33778/soi?year=… $38K 2020 $42K 2021 $44K 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 33778 ZCTA.

2000
13,639
 
2010
14,263
▲ +4.6%
2020
15,068
▲ +5.6%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 33778. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 33778

Largo and its immediate neighbors, sorted by distance.

3 mi
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Distance from 33778 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 Number115085
City AliasesLargo, Seminole

07Frequently Asked Questions

What county is ZIP code 33778 in?

ZIP code 33778 is in Pinellas County, Florida (county FIPS code 12103).

What city is ZIP code 33778?

The primary USPS city for 33778 is Largo, FL.

What metro area (MSA) is 33778 in?

33778 is part of the Tampa-St. Petersburg-Clearwater, FL Metro Area (MSA code 45300).

What is the population of ZIP code 33778?

The 2020 Census population of 33778 was 15,068 residents.

What is the median income in ZIP code 33778?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 33778 is about $43,782, 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.