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City ZIP codes · Maryland

Towson, MD ZIP Codes

5 ZIP codes use the postal name Towson, Maryland (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 4 residential and 1 for PO boxes or a single organization. Median household income runs from $93,808 in 21286 to $99,606 in 21204 (Census Bureau, ACS 2020-2024). Towson's most populous ZIP code is 21286, with 21,853 people (ACS 2020-2024); 35% of its land is in the city of Towson.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Towson's ZIP codes?

21204: $100k median household income21252: – median household income21285: – median household income21286: $94k median household income2128621204212522128521204: $100k median household income21252: – median household income21285: – median household income21286: $94k median household income2128621204212522128521204: $100k median household income21252: – median household income21285: – median household income21286: $94k median household income212862120421252
The 4 residential ZIP codes named Towson, shaded by median household income in national fifths (ACS 2020-2024). Select a ZIP to open it. <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are Towson's ZIP codes?

The highest median household income is in 21204 ($99,606), the lowest in 21286 ($93,808). Home values run from $430,100 in 21286 to $594,800 in 21204.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013, B25077, B01003).

All 4 residential ZIP codes of Towson

Residential ZIP codes with the postal name Towson, MD, largest first (ACS 2020-2024); sort by any column
County
21286 Baltimore County 21,853 2,543 $94k $430k
21204 Baltimore County 19,845 3,169 $100k $595k
21252 Baltimore County 4,865 19,538 – –
21285 Baltimore County 3 17 – –

Download the 5 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; 2023 Gazetteer land areas (2020 ZCTAs); town names from simplemaps US ZIP Codes (CC BY 4.0) and GeoNames (CC BY 4.0).

PO Box and single-organization ZIP codes in Towson

1 ZIP code named Towson has no residential delivery area: post office boxes, or one organization (a large employer, an agency, a university) with its own code. The Census Bureau publishes no figures for them.

Towson, MD: ZIP codes without a residential area, for PO boxes or one organization (GeoNames postal codes; USPS does not publish openly which is which)
ZIPCounty
21284Baltimore County

Source: GeoNames postal codes (CC BY 4.0); a ZIP code with no Census ZCTA has no residential delivery area.

Which counties do Towson's ZIP codes reach?

Towson's residential ZIP codes lie in Baltimore County.

Which places do Towson's ZIP codes cover?

A postal name is not a city limit. By the Census Bureau's places, Towson's residential ZIP codes cover Towson itself and 1 other place, each listed with the ZIP codes that have at least 5% of their land in it or hold most of the place:

  • Hampton census-designated 21286

Source: U.S. Census Bureau, 2020 ZCTA-to-place relationship file (shares of land).

Which first three digits do Towson's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Towson starts with 212.

Three-digit prefixes of Towson's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Towson's
PrefixSectional centerHereAll codes
212 Baltimore, MD (SCF 212) 5 62

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.