RANKING · 2024 ACS · 22 SHOWN OF 22

Highest Romanian population share, Montana counties

Montana counties ranked by the share of all residents who are Romanian ancestry (2024 American Community Survey). A concentration measure: Romanian residents as a percentage of total population. This list covers the 22 counties in Montana that qualify, ranked against each other statewide. The median across all 22 is 0.1%. Biggest climber in the top 100 since 2020: Mineral County, MT, up 18 places to #5.

Romanian Americans: full group profile →

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SAME RANKING BYCities States Metros

RELATEDLargest American population Highest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share

YEAR2010 2020 2024

RANKPLACESTATEPOPROMANIAN SHAREVS 2010

01Petroleum County, MTMT5481.3%–

02▲4Lewis and Clark County, MTMT75,3310.5%+0.4 pts

03Sheridan County, MTMT3,4360.4%−0.4 pts

04Daniels County, MTMT1,6120.4%–

05▲18Mineral County, MTMT5,1850.3%–

06▲13Jefferson County, MTMT13,3290.3%–

07▲9Gallatin County, MTMT128,7400.2%0.0 pts

08Roosevelt County, MTMT10,2420.1%0.0 pts

09▼1Ravalli County, MTMT48,5820.1%0.0 pts

10▲5Cascade County, MTMT85,0290.1%–

11▲1Madison County, MTMT10,0260.1%–

12▼5Carbon County, MTMT11,4660.1%–

13▼10Richland County, MTMT11,3770.1%−0.1 pts

14▼3Flathead County, MTMT115,4290.1%–

15▼1Missoula County, MTMT123,5130.1%−0.1 pts

16▲9Pondera County, MTMT6,0720.0%−0.3 pts

17▲5Sweet Grass County, MTMT3,7620.0%–

18▲2Lake County, MTMT33,3920.0%–

19Fergus County, MTMT11,8250.0%0.0 pts

20Lincoln County, MTMT22,3280.0%–

21▲6Valley County, MTMT7,3850.0%−0.2 pts

22▲4Yellowstone County, MTMT172,6920.0%−0.2 pts

SHOWING 1–22 OF 22

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES