Fairfield, MT ZIP Codes

One ZIP code serves Fairfield, Montana: 59436. Together they are home to 2,039 residents in 806 households. That is more than the 759 people counted inside Fairfield town limits, because these ZIP codes reach past its boundary.

Fairfield town limits (Census)

MeasureCensus figure
Residents759
Households318
Median household income$69,265
Median home value$217,400
Median age31.8
Median rent$674

All 1 ZIP codes together

MeasureValue
Residents (sum of ZIP codes)2,039
Households (sum of ZIP codes)806
Median household income, range across ZIP codes$80,652 (59436) to $80,652 (59436)
Household-weighted average of ZIP medians (an approximation, not a true median)$80,652
Homeowners79.8%
Households with kids under 1835.6%
Moved in the past year7.0%
Carrier routes in EDDM2GO's route library2 routes, 412 homes (1 of 1 ZIP codes)

Every ZIP code in Fairfield

ZIPMailing cityResidentsHouseholdsMedian incomeHome valueHomeownersWith kidsNew moversCarrier routesMailboxesWhy listed
59436Fairfield2,039806$80,652$324,10079.8%35.6%7.0%24150% of its land; mailing city

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

Counties

Price a mailing to Fairfield ZIP codes

EDDM guides

Pick carrier routes on the EDDM route map

Frequently asked questions

What ZIP codes are in Fairfield, MT?
59436. A ZIP code is listed for Fairfield when at least 10% of its land lies inside Fairfield town limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Fairfield.
What is the population of Fairfield, MT?
The Census Bureau counts 759 residents inside Fairfield town limits (ACS 2020–2024). The 1 ZIP code that serve Fairfield hold 2,039 residents in all.
What is the median household income in Fairfield, MT?
$69,265 inside Fairfield town limits, per the Census Bureau. Across its ZIP codes the medians run from $80,652 to $80,652.
How many carrier routes and mailboxes are in Fairfield, MT?
For the 1 of 1 ZIP codes in EDDM2GO's stored route library: 2 carrier routes reaching 412 residential and 3 business mailboxes.

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