County market report · FIPS 30043
Jefferson County, MT
Helena, MT · Population 12,360 (Census V2020 est.)
Typical value
$520,701
Sep 2026
1M
-0.1%
3M
-0.3%
12M
+3.5%
5Y
+34.5%
10Y
+129.9%
From peak
-0.7%
Peak $524,480 · Mar 2026
Rank US / state
1291 / 32
by 12M change
Zillow Home Value Index
Source: Zillow Home Value Index (ZHVI), all homes, smoothed & seasonally adjusted · data through Sep 2026.
Inflection signal
Price-OnlyNo active signal this month.
Inventory, sales & days on market — Phase 2
Supply and demand confirmation is not yet available.
Yearly values (December)
| Year | ZHVI (Dec) | YoY change |
|---|---|---|
| 2025 | $514,596 | +2.5% |
| 2024 | $502,166 | +6.3% |
| 2023 | $472,515 | +4.4% |
| 2022 | $452,710 | +12.8% |
| 2021 | $401,394 | +27.7% |
| 2020 | $314,274 | +11.5% |
| 2019 | $281,779 | +5.6% |
| 2018 | $266,715 | +6.6% |
| 2017 | $250,156 | +9.3% |
| 2016 | $228,884 | +3.2% |
| 2015 | $221,823 | +6.0% |
| 2014 | $209,287 | +5.2% |
| 2013 | $198,910 | +4.3% |
| 2012 | $190,675 | +5.5% |
| 2011 | $180,653 | -0.6% |
| 2010 | $181,821 | — |