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US ZIP Code Profile

ZIP Code 33584
Seffner, Florida

ZIP code 33584 is in Seffner, located in Hillsborough County, Florida, within the Tampa-St. Petersburg-Clearwater metro area. Its 2020 Census population was 27,503. The estimated median adjusted gross income per tax return is $42,640, and about 4% of filers report $200,000 or more.

2020 Population
27,503
Census ZCTA
County
Hillsborough
FIPS 12057
Median income (est.)
$42,640
IRS SOI 2022
Land Area
21.428 mi²
+ 0.812 mi² water

01Location & Geography

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

Primary CitySeffner, FL
CountyHillsborough County (FIPS 12057)
StateFlorida (FIPS 12)
Metro Area (MSA)Tampa-St. Petersburg-Clearwater, FL Metro Area (45300)
Census Region / DivisionSouth Region · South Atlantic Division
Coordinates28.005455, -82.294334
Land / Water Area21.428 mi² land · 0.812 mi² water

02Income & Economics

Distribution of the 14,040 individual tax returns filed in 33584 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
30.2%
$25K–$50K
28.1%
$50K–$75K
15.5%
$75K–$100K
9.0%
$100K–$200K
13.6%
$200K+
3.7%
The $200,000+ bracket accounts for 22% of 33584's total adjusted gross income, from 4% of returns — a concentration that drives the gap between the median ($42,640) 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 33584's IRS income metrics, 2020–2022.

Median income (2021→2022)
$42,640
▲ 7.8%
Filers earning $200K+
3.7%
▲ 0.4 pt
Total filers
14,040
▲ 4.5%
GET /zipc/v2/zipcodes/33584/soi?year=… $37K 2020 $40K 2021 $43K 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 33584 ZCTA.

2000
20,490
 
2010
25,392
▲ +23.9%
2020
27,503
▲ +8.3%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 33584. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 33584

Seffner and its immediate neighbors, sorted by distance.

3 mi
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Distance from 33584 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 Number118505
City AliasesSeffner

07Frequently Asked Questions

What county is ZIP code 33584 in?

ZIP code 33584 is in Hillsborough County, Florida (county FIPS code 12057).

What city is ZIP code 33584?

The primary USPS city for 33584 is Seffner, FL.

What metro area (MSA) is 33584 in?

33584 is part of the Tampa-St. Petersburg-Clearwater, FL Metro Area (MSA code 45300).

What is the population of ZIP code 33584?

The 2020 Census population of 33584 was 27,503 residents.

What is the median income in ZIP code 33584?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 33584 is about $42,640, 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.