ZIP Code Tabulation Area · Montana

ZIP Code 59643: Broadwater County, MT

ZIP Code 59643 (Broadwater County, Montana) has an estimated 867 residents in 321 households. The median household income is $49,831, the median home value is $355,000 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. 4 figures for this ZIP (household income, owner-occupied, 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

867

Margin of error ±318

Median household income

$49,831*

Margin of error ±$30,330· estimate has a large margin of error

Median home value

$355,000

Margin of error ±$77,232

Median gross rent

—

Margin of error not available

Median age

42.5 yrs

Margin of error ±4.0 yrs

Mean travel time to work

32.7 min*

Margin of error ±31.3 min· estimate has a large margin of error

How ZIP 59643 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 5964342.5 yrsMontana40.4 yrsUnited States38.9 yrs

Median household income

ZIP 59643$49,831*Montana$72,509United States$80,734

Per capita income

ZIP 59643$24,329Montana$41,711United States$44,673

Poverty rate

ZIP 596435.9%Montana11.5%United States12.5%

Unemployment rate

ZIP 596430.0%Montana3.6%United States5.2%

Bachelor's degree or higher

ZIP 596438.4%Montana35.2%United States35.7%

Median home value

ZIP 59643$355,000Montana$375,800United States$332,700

Median gross rent

ZIP 59643—Montana$1,081/moUnited States$1,413/mo

Owner-occupied homes

ZIP 5964394.4%*Montana69.2%United States65.2%

Mean travel time to work

ZIP 5964332.7 min*Montana19.1 minUnited States26.4 min

Worked from home

ZIP 5964312.6%*Montana12.5%United States15.1%

All figures for ZIP 59643

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 59643 — ACS 2020–2024 5-year estimates
Measure	ZIP 59643	Margin of error	Montana	United States
Total population	867	±318	1,116,875	334,922,499
Median age	42.5 yrs	±4.0 yrs	40.4 yrs	38.9 yrs
Households	321	±117	458,859	129,227,496
Median household income	$49,831*	±$30,330	$72,509	$80,734
Per capita income	$24,329	±$8,359	$41,711	$44,673
Poverty rate	5.9%	±6.5 pts	11.5%	12.5%
Unemployment rate	0.0%	±2.7 pts	3.6%	5.2%
Bachelor's degree or higher	8.4%	±8.6 pts	35.2%	35.7%
Median home value	$355,000	±$77,232	$375,800	$332,700
Median gross rent	—	—	$1,081/mo	$1,413/mo
Owner-occupied homes	94.4%*	±15.4 pts	69.2%	65.2%
Mean travel time to work	32.7 min*	±31.3 min	19.1 min	26.4 min
Worked from home	12.6%*	±20.7 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 59643
Group	ZIP 59643	Montana	United States
White alone, not Hispanic or Latino	93.9%	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	0.0%	0.8%	5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino	0.0%	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	6.1%	4.7%	4.3%
Hispanic or Latino (of any race)	0.0%	4.6%	19.3%

Where ZIP 59643 is

State: Montana
Main county: Broadwater County
Largest overlapping place: Toston (1% of the ZIP's land area)
Land area: 274.00 sq mi· about 3 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 Broadwater County

59644 Broadwater County, MT 59647 Broadwater County, MT

See every ZIP code in Montana, or compare ZIP 59643 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.