Plain

City ZIP codes · Montana

Billings, MT ZIP Codes

14 ZIP codes use the postal name Billings, Montana (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 4 residential and 10 for PO boxes or a single organization. Median household income runs from $58,598 in 59101 to $125,833 in 59106, 2.1 times as much (Census Bureau, ACS 2020-2024). Billings's most populous ZIP code is 59102, with 47,977 people (ACS 2020-2024); 94% of its land is in the city of Billings.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Billings's ZIP codes?

59101: $59k median household income59102: $76k median household income59105: $78k median household income59106: $126k median household income5910159106591055910259101: $59k median household income59102: $76k median household income59105: $78k median household income59106: $126k median household income5910159106591055910259101: $59k median household income59102: $76k median household income59105: $78k median household income59106: $126k median household income59101591065910559102
The 4 residential ZIP codes named Billings, 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 Billings's ZIP codes?

The highest median household income is in 59106 ($125,833), the lowest in 59101 ($58,598). Home values run from $268,700 in 59101 to $496,500 in 59106.

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

All 4 residential ZIP codes of Billings

Residential ZIP codes with the postal name Billings, MT, largest first (ACS 2020-2024); sort by any column
County
59102 Yellowstone County 47,977 3,190 $76k $335k
59101 Yellowstone County 42,250 72 $59k $269k
59105 Yellowstone County 35,480 370 $78k $349k
59106 Yellowstone County 21,417 191 $126k $497k

Download the 14 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 Billings

10 ZIP codes named Billings have 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.

Billings, MT: ZIP codes without a residential area, for PO boxes or one organization (GeoNames postal codes; USPS does not publish openly which is which)
ZIPCounty
59103Yellowstone County
59104Yellowstone County
59107Yellowstone County
59108Yellowstone County
59111Yellowstone County
59112Yellowstone County
59114Yellowstone County
59115Yellowstone County
59116Yellowstone County
59117Yellowstone County

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

Which counties do Billings's ZIP codes reach?

Billings's residential ZIP codes lie in 2 counties: Yellowstone County (4 ZIP codes mainly there), Big Horn County (part of a ZIP code).

Which places do Billings's ZIP codes cover?

A postal name is not a city limit. By the Census Bureau's places, Billings's residential ZIP codes cover Billings 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:

  • Lockwood census-designated 59101

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

Which first three digits do Billings'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 Billings starts with 591.

Three-digit prefixes of Billings'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 Billings's
PrefixSectional centerHereAll codes
591 Billings, MT (SCF 590) 14 14

All 14 ZIP codes that start with 591 are Billings's: 4 residential codes and 10 PO Box or unique codes, sorted at Billings, MT (SCF 590).

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