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US ZIP Code Profile

ZIP Code 03801
Portsmouth, New Hampshire

ZIP code 03801 is in Portsmouth, located in Rockingham County, New Hampshire, within the Boston-Cambridge-Newton metro area. Its 2020 Census population was 22,767. The estimated median adjusted gross income per tax return is $73,913, and about 17% of filers report $200,000 or more.

2020 Population
22,767
Census ZCTA
County
Rockingham
FIPS 33015
Median income (est.)
$73,913
IRS SOI 2022
Land Area
23.773 mi²
+ 5.435 mi² water

01Location & Geography

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

Primary CityPortsmouth, NH
CountyRockingham County (FIPS 33015)
StateNew Hampshire (FIPS 33)
Metro Area (MSA)Boston-Cambridge-Newton, MA-NH Metro Area (14460)
Census Region / DivisionNortheast Region · New England Division
Coordinates43.074814, -70.80544
Land / Water Area23.773 mi² land · 5.435 mi² water

02Income & Economics

Distribution of the 13,120 individual tax returns filed in 03801 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
18.0%
$25K–$50K
16.9%
$50K–$75K
15.8%
$75K–$100K
11.5%
$100K–$200K
20.6%
$200K+
17.2%
The $200,000+ bracket accounts for 68% of 03801's total adjusted gross income, from 17% of returns — a concentration that drives the gap between the median ($73,913) 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 03801's IRS income metrics, 2020–2022.

Median income (2021→2022)
$73,913
▲ 5.5%
Filers earning $200K+
17.2%
▲ 0.8 pt
Total filers
13,120
▲ 0.7%
GET /zipc/v2/zipcodes/03801/soi?year=… $63K 2020 $70K 2021 $74K 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 03801 ZCTA.

2000
21,558
 
2010
21,532
▼ -0.1%
2020
22,767
▲ +5.7%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number326900
City AliasesNewington, Portsmouth

06Frequently Asked Questions

What county is ZIP code 03801 in?

ZIP code 03801 is in Rockingham County, New Hampshire (county FIPS code 33015).

What city is ZIP code 03801?

The primary USPS city for 03801 is Portsmouth, NH.

What metro area (MSA) is 03801 in?

03801 is part of the Boston-Cambridge-Newton, MA-NH Metro Area (MSA code 14460).

What is the population of ZIP code 03801?

The 2020 Census population of 03801 was 22,767 residents.

What is the median income in ZIP code 03801?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 03801 is about $73,913, with around 17% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.