| ZIP Codes: | 24 ZIP Codes (14 Standard, 4 PO Box, 6 Unique) [See All] |
| Area Code: | 406 |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 2:12:55 PM |
| Population: | 169,496 [See All] |
| FIPS: | 30111 |
| CBSA: | Billings, MT |
| Land Area: | 3,299 sq mi |
| Water Area: | 16 sq mi |
| Coordinates: | 45.8429, -108.4469 |
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169,496 residents live across 24 ZIPs covering 3,299 sq mi, served by 11 distinct USPS-recognized cities.
Population moved from 152,730 to 169,496 from 2014 to 2024 — a +11.0% change. 10 ZIPs gained residents, 4 lost.
The county's wealthiest ZIP 59106 (Billings, $125,833 median) and poorest ZIP 59101 (Billings, $58,598) are 21.4 miles apart — a 2.1× income gap across local geography.
Median home values vary 2.1× across this county — from $234,300 in 59088 (Worden) to $496,500 in 59106 (Billings).
Density varies 802× across the county — from 4 people/sq mi in 59088 (Worden) to 3,326 in 59102 (Billings).
Educational attainment ranges from 23.6% bachelor's+ in 59101 (Billings) to 52.2% in 59106 (Billings) — the breadth of educational profiles across the area.
Within Montana, this is the #1 most populous of 56 counties and ranks #13 for median household income with the #15 fastest decade growth .
Hosts 4 single-entity Unique ZIPs: 59115Billings ; 59116First Interstate Bank ; 59117Wells Fargo Bank ; and 59114Billings .
Weighted by population, the typical household earns about $79,476 across the county — reflecting what a typical resident sees, not a simple ZIP average.
34.1% of adults age 25+ hold a bachelor's degree or higher (39,927 of 117,141 reporting). The most-educated ZIPs cluster around Billings.
14 Standard delivery, 4 PO Box only, 6 single-entity Unique ZIPs serve this county.
6 ZIP codes in this county serve a single facility — typically theme parks, universities, large corporations, airports, or government complexes.
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 59102 | Billings | Standard | 47,977 | $76,141 | 14.4 | 0.4% |
| 59101 | Billings | Standard | 42,250 | $58,598 | 547.3 | 5.0% |
| 59105 | Billings | Standard | 35,480 | $78,014 | 76.8 | 15.1% |
| 59106 | Billings | Standard | 21,417 | $125,833 | 114.2 | 52.1% |
| 59044 | Laurel | Standard | 12,302 | $87,648 | 180.9 | 16.7% |
| 59079 | Shepherd | Standard | 3,940 | $68,047 | 328.3 | 6.9% |
| 59037 | Huntley | Standard | 2,336 | $105,099 | 180.8 | 37.6% |
| 59088 | Worden | Standard | 1,265 | $90,625 | 304.9 | 20.5% |
| 59057 | Molt | Standard | 782 | $80,571 | 289.0 | 11.2% |
| 59006 | Ballantine | Standard | 586 | $53,304 | 68.3 | -21.7% |
| 59015 | Broadview | Standard | 394 | $69,583 | 223.3 | -25.0% |
| 59024 | Custer | Standard | 335 | $78,125 | 623.9 | -31.4% |
| 59002 | Acton | Standard | 221 | $36,771 | 73.7 | -15.0% |
| 59064 | Pompeys Pillar | Standard | 211 | — | 273.4 | 108.9% |
| 59108 | Billings | PO Box | — | — | 0.0 | — |
| 59107 | Billings | PO Box | — | — | 0.0 | — |
| 59115 | Billings | Unique | — | — | 0.0 | — |
| 59116 | Billings | Unique | — | — | 0.0 | — |
| 59117 | Billings | Unique | — | — | 0.0 | — |
| 59114 | Billings | Unique | — | — | 0.0 | — |
| 59112 | Billings | Unique | — | — | 0.0 | — |
| 59104 | Billings | PO Box | — | — | 0.0 | — |
| 59103 | Billings | PO Box | — | — | 0.0 | — |
| 59111 | Billings | Unique | — | — | 0.0 | — |