Residential delivery area · Montana
ZIP Code 59421: Cascade, MT
ZIP code 59421 uses the postal name Cascade, Montana and lies mostly in Cascade County (96% of its land) with the rest in Lewis and Clark County (Census 2020 ZIP-county file). About 2,100 people live there (Census Bureau, ACS 2020-2024). Median household income is $78,125 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Hardy (under 1%), Cascade (under 1%) and Cascade Colony (under 1%); more than 99% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Cascade · its only residential ZIP
- County
- Cascade County (96%); Lewis and Clark County (4%)
- Census places
- Hardy (under 1%) census-designated place; Cascade (under 1%); Cascade Colony (under 1%) census-designated place
- Metro area
- Great Falls, MT
- House district
- MT-2 119th Congress
- State
- Montana
- Time zone
- Mountain
- Land area
- 746.6 sq mi · 3 people per sq mi
Where is ZIP code 59421?
59421 centers on 47.075°, -111.688° and covers 746.6 square miles of land plus 4.6 of water. It borders 8 ZIP codes: 59405, 59648, 59485, 59602, 59483, 59477, 59443, 59645.
The map draws ZIP code areas only. For the streets inside 59421, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 59421 compare with the rest of Cascade County?
| Measure | 59421 | In Cascade County | In MT |
|---|---|---|---|
| People (ACS 2020-2024) | 2,069 | 4th of 17 | 90th of 369 |
| Median household income | $78k | not ranked | not ranked |
| Median home value | $378k | 1st of 5 | 48th of 120 |
59421's median household income is not ranked: its 90% margin of error (±$23,502) is more than a quarter of the figure ($78,125). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
It is denser than 7% of U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 59421?
The 2020 Census counted 2,057 people in 59421; the ACS, which samples households over 2020-2024, estimates 2,069. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 2,069±276 (90% margin)
- 2020 Census count
- 2,057
- Households
- 969
- Median age
- 53.4
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 59421?
Of the 2,069 people the ACS estimates in 59421, 15.0% are under 18 and 31.0% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (92.2%).
- Under 1815.0%
- 18 to 6454.0%
- 65 and older31.0%
- White, not Hispanic92.2%
- Other or two or more5.9%
- Hispanic or Latino1.9%
- Black, not Hispanic0.0%
- Asian, not Hispanic0.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 59421 earn?
Median household income is $78,125 (ACS 2020-2024).
- Median household income
- $78,125±$23,502
- Income per person
- $58,072
- Below the poverty line
- 8.1%
- Unemployed (of the labor force)
- 4.5%
- Adults 25+ with a bachelor's degree
- 29.2%
- Adjusted gross income per tax return, 2022
- $76,189930 returns; wages 52% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 59421?
FHFA's house price index for 59421, built from repeat sales and appraisals of the same homes, rose 105% from 2015 to 2025 and rose 87% from 2020 to 2025.
- Median home value (owners' estimate)
- $377,900
- Median gross rent
- $850
- Homes owned by their occupants
- 86.2%
- Housing units
- 1,474
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 59421?
37 business establishments had a location in this ZIP code in 2023, 4 more than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade6
- Accommodation and food services5
- Real estate and rental and leasing4
- Health care and social assistance3
- Arts, entertainment, and recreation3
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 59421?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 59405 | Great Falls | 33,350 | $59k | 23.5 mi |
| 59648 | Wolf Creek | 486 | $66k | 23.9 mi |
| 59485 | Ulm | 772 | $90k | 25.3 mi |
| 59602 | Helena | 30,754 | $93k | 26.2 mi |
| 59483 | Sun River | 247 | $98k | 27.0 mi |
| 59477 | Simms | 334 | $42k | 28.7 mi |
| 59443 | Fort Shaw | 705 | $81k | 34.4 mi |
| 59645 | White Sulphur Springs | 1,611 | $77k | 40.1 mi |
| 59472 | Sand Coulee | 507 | $68k | 29.0 mi (near) |
| 59480 | Stockett | 328 | $81k | 30.4 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.