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ZIP CODE TABULATION AREA

59640

Montana · 160 residents · 20.2 sq mi
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With 160 people, ZIP 59640 is a ZIP code in Lewis and Clark County. The median age is 55.1, about 16 years above the US median. This is an unusually credentialed place: 51% of adults have a four-year degree. Density works out to 8 people per square mile. The foreign-born share is 0%. That is roughly 27% ahead of the Lewis and Clark County median. Among the 7 ZIP codes in Lewis and Clark County, 59640 ranks 1st by median household income.

$99,167
US average: $82,259
$42,500
US average: $44,673
$287,500
US average: $376,019
50.9%
US average: 35.6%
Land area
20.2 sq mi
Age, sex & households
Under 18
30.0%
Age 65+
28.7%
58.1%
41.9%
2.76 people
Race & ethnicity · 2024
2024
White, non-Hispanic100%(160)
Black0%(0)
Hispanic / Latino0%(0)
Asian0%(0)
Other0%(0)
0
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Housing
2.9
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Within Lewis and Clark County
Income rank vs other ZIPs
LOWEST1ST OF 7HIGHEST
Adjacent ZIPs
59410$42,321
59601$72,290
59602$92,985
Frequently asked

How many people live in ZIP code 59640?

ZIP code 59640 has about 160 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 59640?

The typical household in ZIP code 59640 earns about $99,167 a year. Half of households make more than that, and half make less.

Is ZIP code 59640 expensive?

In ZIP code 59640, the median home is worth about $287,500.

How educated are people in ZIP code 59640?

About 50.9% of adults age 25 and over in ZIP code 59640 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 59640?

About 3.8% of people in ZIP code 59640 live below the federal poverty line.

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DATA: US CENSUS BUREAU ACS 5-YEAR · ZCTA · UPDATED 2024