ZIP codes
11
Lewis and Clark County, MT Demographics & ZIP Codes
Lewis and Clark County, Montana demographics and median household income by ZIP code — 11 ZIP codes — population 73,239 — avg. income $68,030 — avg. home value $326,113. Compare income, housing, and ZIP-level data on US5.
Population
73,239
Median household income (avg.)
$68,030
91% of U.S. median
Average home value
$326,113
94% of U.S. median
Average rent
$848
73% of U.S. median
Lewis and Clark County demographics
Lewis and Clark County, Montana covers 11 ZIP codes, with a combined ZIP-area population of about 73,239.
Median household income in Lewis and Clark County
The average median household income across ZIP codes in Lewis and Clark County, Montana is about $68,030 — about even with the MT ZIP average ($68,385), and about 9% below the U.S. median ($75,149).
Among ZIPs with income data, 59640 (Marysville) is near the top at about $95,250, while 59410 (Augusta) is near the bottom at about $34,125.
Housing in Lewis and Clark County
For housing in Lewis and Clark County, Montana, the average median home value is about $326,113 and the average median rent is about $848.
The most populous ZIP is 59601 (Helena) with about 31,822 residents. Use the table below to compare ZIP codes across the county.
ZIP codes in Lewis and Clark County
Sort by population, income, or home value. Click a column header to toggle ascending / descending.
| ZIP | City | County | State | Population ↓ | Income | Home value |
|---|---|---|---|---|---|---|
| 59601 | Helena | Lewis and Clark County | MT | 31,822 | $70,502 | $355,000 |
| 59602 | Helena Valley Northeast | Lewis and Clark County | MT | 30,379 | $87,841 | $369,800 |
| 59635 | Spokane Creek | Lewis and Clark County | MT | 8,382 | $73,664 | $356,200 |
| 59639 | Lincoln | Lewis and Clark County | MT | 993 | $46,284 | $294,300 |
| 59410 | Augusta | Lewis and Clark County | MT | 617 | $34,125 | $227,700 |
| 59648 | Milford Colony | Lewis and Clark County | MT | 468 | $68,542 | $321,400 |
| 59633 | Canyon Creek | Lewis and Clark County | MT | 288 | — | $409,500 |
| 59625 | Helena | Lewis and Clark County | MT | 156 | — | — |
| 59640 | Marysville | Lewis and Clark County | MT | 105 | $95,250 | $275,000 |
| 59636 | Helena West Side | Lewis and Clark County | MT | 29 | — | — |
| 59623 | Helena | Lewis and Clark County | MT | — | — | — |
Frequently asked questions
What are the demographics of Lewis and Clark County?
Lewis and Clark County, Montana has a combined ZIP-area population of about 73,239 across 11 ZIP codes. Browse the ZIP table for population, income, and housing by code.
What is the median household income in Lewis and Clark County?
The average median household income across ZIP codes in Lewis and Clark County, Montana is about $68,030, roughly in line with the state ZIP average ($68,385), and about 9% below the U.S. median ($75,149). Average median home value is about $326,113. Among ZIPs with data, 59640 (Marysville) is near the top ($95,250) and 59410 (Augusta) is near the bottom ($34,125).
How many ZIP codes are in Lewis and Clark County?
Lewis and Clark County, Montana includes 11 ZIP codes on US5. Each row links to demographics, median income, and housing for that code.
Where can I find ZIP code demographics for Lewis and Clark County?
This page lists ZIP codes in Lewis and Clark County, Montana with population, median household income, and home value. Select a ZIP for a full demographics profile.