Lewis and Clark County, MT Average Home Price (2026)
The average home price in Lewis and Clark County, Montana is about $454,000 (the 2026 median across 8 ZIP codes, at ~$303/sq ft) — 8% more expensive than the Montana median and 57% more expensive than the typical U.S. home.
How Lewis and Clark County compares
Lewis and Clark County is relatively expensive for housing nationally: its typical home costs $454,000 against $418,500 for Montana and $289,000 for the U.S. Within the county, ZIP-level values run from about $314,000 to $1,191,000.
| Area | Typical value | $ / sq ft |
|---|---|---|
| Lewis and Clark County | $454,000 | $303 |
| Montana | $418,500 | $280 |
| United States | $289,000 | $193 |
Lewis and Clark County home prices by ZIP code
The 8 most valuable ZIP codes in Lewis and Clark County (of 8 with data):
| ZIP code | Typical value | $ / sq ft | vs county |
|---|---|---|---|
| 59640 Marysville | $1,191,000 | $627 | +162% |
| 59602 Helena | $530,000 | $305 | +17% |
| 59633 Canyon Creek | $504,000 | $300 | +11% |
| 59648 Wolf Creek | $468,000 | $437 | +3% |
| 59601 Helena | $440,000 | $249 | -3% |
| 59635 East Helena | $435,000 | $269 | -4% |
| 59639 Lincoln | $364,000 | $351 | -20% |
| 59410 Augusta | $314,000 | $292 | -31% |
Home value appreciation in Lewis and Clark County
Home prices in Lewis and Clark County have risen about 111% over the last 10 years (≈7.7% a year) and +174.1% over 20 years, according to the FHFA house price index through 2025. The most recent year came in at +5.1% — still rising. A home worth $454,000 today was worth roughly $215,575 ten years ago.
See where that trend takes a specific home with the home appreciation calculator — statewide, Montana is +105.0% over the same 10 years. Past appreciation is a track record, not a forecast; local prices can fall.
Calculators for Lewis and Clark County
Run the numbers for Lewis and Clark County with the local rates already filled in — change any input to test your own situation.
Salary needed to buy a home in Lewis and Clark County
To buy the typical $454,000 home in Lewis and Clark County with 20% down, you need a household income of roughly $124,000 a year (about $2,880 a month for the mortgage, taxes, and insurance). With 10% down the bar rises to about $147,000, because the loan is bigger and mortgage insurance kicks in.
| Down payment | Cash down | Monthly payment | Income needed |
|---|---|---|---|
| 5% (+PMI) | $22,700 | $3,580/mo | $154,000/yr |
| 10% (+PMI) | $45,400 | $3,420/mo | $147,000/yr |
| 20% | $90,800 | $2,880/mo | $124,000/yr |
Assumes a 30-year fixed mortgage at 6.5%, property tax at 1.1% and insurance at 0.45% of value per year, PMI of 0.75% on loans with less than 20% down, and the standard 28% housing-to-income rule. Your rate, taxes, and HOA will move these — run your own numbers in the mortgage calculator.
What your budget buys in Lewis and Clark County
At about $303 per square foot, here is roughly how much home different budgets get you in Lewis and Clark County:
| Budget | Approx. size | What that looks like locally |
|---|---|---|
| $250k | 830 sq ft | below the local median — condos, smaller or older homes |
| $300k | 990 sq ft | below the local median — condos, smaller or older homes |
| $400k | 1320 sq ft | around the typical home here |
| $500k | 1650 sq ft | around the typical home here |
| $600k | 1980 sq ft | above the median — larger homes or the pricier ZIPs |
Wondering where that budget goes further? The relocation calculator ranks hundreds of U.S. cities by what the same money buys — it opens filtered to Montana.
Estimate a specific home in Lewis and Clark County
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Lewis and Clark County home prices: frequently asked
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Browse all Montana cities and counties, or look up price per square foot by ZIP code nationwide.
Directional estimates from public market data (Realtor.com & Zillow research; FHFA house price index; Census ZIP-to-county relationships), not appraisals.