ZIP Code Tabulation Area · Montana

ZIP Code 59931: Lake County, MT

ZIP Code 59931 (Lake County, Montana) has an estimated 335 residents in 133 households. The median household income is $112,083, the median home value is $742,600 and the median gross rent is —. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated Oct 26, 2026

Some estimates have a large margin of error. 5 figures for this ZIP (poverty rate, bachelor's or higher, home value, commute, work from home) are marked with *. ACS figures come from a sample, and small areas have fewer responses, so treat these numbers as rough ranges.

Total population

335

Margin of error ±142

Median household income

$112,083

Margin of error ±$45,494

Median home value

$742,600*

Margin of error ±$376,119· estimate has a large margin of error

Median gross rent

—

Margin of error not available

Median age

50.5 yrs

Margin of error ±10.0 yrs

Mean travel time to work

41.3 min*

Margin of error ±42.0 min· estimate has a large margin of error

How ZIP 59931 compares with Montana and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 5993150.5 yrsMontana40.4 yrsUnited States38.9 yrs

Median household income

ZIP 59931$112,083Montana$72,509United States$80,734

Per capita income

ZIP 59931$69,134Montana$41,711United States$44,673

Poverty rate

ZIP 5993120.9%*Montana11.5%United States12.5%

Unemployment rate

ZIP 599312.1%Montana3.6%United States5.2%

Bachelor's degree or higher

ZIP 5993144.9%*Montana35.2%United States35.7%

Median home value

ZIP 59931$742,600*Montana$375,800United States$332,700

Median gross rent

ZIP 59931—Montana$1,081/moUnited States$1,413/mo

Owner-occupied homes

ZIP 5993198.5%Montana69.2%United States65.2%

Mean travel time to work

ZIP 5993141.3 min*Montana19.1 minUnited States26.4 min

Worked from home

ZIP 5993127.1%*Montana12.5%United States15.1%

All figures for ZIP 59931

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 59931 — ACS 2020–2024 5-year estimates
Measure	ZIP 59931	Margin of error	Montana	United States
Total population	335	±142	1,116,875	334,922,499
Median age	50.5 yrs	±10.0 yrs	40.4 yrs	38.9 yrs
Households	133	±50	458,859	129,227,496
Median household income	$112,083	±$45,494	$72,509	$80,734
Per capita income	$69,134	±$27,604	$41,711	$44,673
Poverty rate	20.9%*	±19.6 pts	11.5%	12.5%
Unemployment rate	2.1%	±4.7 pts	3.6%	5.2%
Bachelor's degree or higher	44.9%*	±23.6 pts	35.2%	35.7%
Median home value	$742,600*	±$376,119	$375,800	$332,700
Median gross rent	—	—	$1,081/mo	$1,413/mo
Owner-occupied homes	98.5%	±6.5 pts	69.2%	65.2%
Mean travel time to work	41.3 min*	±42.0 min	19.1 min	26.4 min
Worked from home	27.1%*	±20.8 pts	12.5%	15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 59931
Group	ZIP 59931	Montana	United States
White alone, not Hispanic or Latino	67.2%	83.6%	57.4%
Black or African American alone, not Hispanic or Latino	0.0%	0.4%	11.9%
American Indian and Alaska Native alone, not Hispanic or Latino	0.0%	5.3%	0.5%
Asian alone, not Hispanic or Latino	0.9%	0.8%	5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino	0.9%	0.0%	0.2%
Some other race alone, not Hispanic or Latino	0.0%	0.5%	0.6%
Two or more races, not Hispanic or Latino	30.4%	4.7%	4.3%
Hispanic or Latino (of any race)	0.6%	4.6%	19.3%

Where ZIP 59931 is

State: Montana
Main county: Lake County
Largest overlapping place: Rollins (10% of the ZIP's land area)
Land area: 28.33 sq mi· about 12 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in Lake County

59824 Lake County, MT 59855 Pablo, MT 59860 Lake County, MT 59863 Ravalli, MT 59864 Lake County, MT 59865 Lake County, MT 59910 Lake County, MT 59911 Lake County, MT 59914 Lake County, MT 59915 Lake County, MT 59929 Lake County, MT

See every ZIP code in Montana, or compare ZIP 59931 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.