Hamilton, MT ZIP Codes

One ZIP code serves Hamilton, Montana: 59840. Together they are home to 15,679 residents in 6,682 households. That is more than the 5,101 people counted inside Hamilton city limits, because these ZIP codes reach past its boundary.

Hamilton city limits (Census)

MeasureCensus figure
Residents5,101
Households2,748
Median household income$49,204
Median home value$310,000
Median age51.8
Median rent$947

All 1 ZIP codes together

MeasureValue
Residents (sum of ZIP codes)15,679
Households (sum of ZIP codes)6,682
Median household income, range across ZIP codes$61,752 (59840) to $61,752 (59840)
Household-weighted average of ZIP medians (an approximation, not a true median)$61,752
Homeowners70.3%
Households with kids under 1821.2%
Moved in the past year13.2%
Carrier routes in EDDM2GO's route library11 routes, 7,116 homes (1 of 1 ZIP codes)

Every ZIP code in Hamilton

ZIPMailing cityResidentsHouseholdsMedian incomeHome valueHomeownersWith kidsNew moversCarrier routesMailboxesWhy listed
59840Hamilton15,6796,682$61,752$428,10070.3%21.2%13.2%117,7120% of its land; mailing city

A ZIP code is listed for Hamilton when at least 10% of its land lies inside Hamilton city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Hamilton. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Hamilton.

Counties

Price a mailing to Hamilton ZIP codes

EDDM guides

Pick carrier routes on the EDDM route map

Frequently asked questions

What ZIP codes are in Hamilton, MT?
59840. A ZIP code is listed for Hamilton when at least 10% of its land lies inside Hamilton city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Hamilton.
What is the population of Hamilton, MT?
The Census Bureau counts 5,101 residents inside Hamilton city limits (ACS 2020–2024). The 1 ZIP code that serve Hamilton hold 15,679 residents in all.
What is the median household income in Hamilton, MT?
$49,204 inside Hamilton city limits, per the Census Bureau. Across its ZIP codes the medians run from $61,752 to $61,752.
How many carrier routes and mailboxes are in Hamilton, MT?
For the 1 of 1 ZIP codes in EDDM2GO's stored route library: 11 carrier routes reaching 7,116 residential and 595 business mailboxes.

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.