RANKING · 2024 ACS · 30 SHOWN OF 30

Highest Portuguese population share, Montana counties

Montana counties ranked by the share of all residents who are Portuguese ancestry (2024 American Community Survey). A concentration measure: Portuguese residents as a percentage of total population. This list covers the 30 counties in Montana that qualify, ranked against each other statewide. The median across all 30 is 0.1%. Biggest climber in the top 100 since 2020: Silver Bow County, MT, up 28 places to #2.

Portuguese 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

RANKPLACESTATEPOPPORTUGUESE SHAREVS 2010

01▲1Madison County, MTMT10,0261.1%+0.6 pts

02▲28Silver Bow County, MTMT36,1180.6%+0.5 pts

03▲11Teton County, MTMT6,4960.4%+0.1 pts

04▲28Cascade County, MTMT85,0290.4%+0.1 pts

05▼1Mineral County, MTMT5,1850.3%+0.2 pts

06▲10Flathead County, MTMT115,4290.2%0.0 pts

07▼1Gallatin County, MTMT128,7400.2%−0.2 pts

08▲3Missoula County, MTMT123,5130.2%−0.1 pts

09▲15Ravalli County, MTMT48,5820.2%−0.5 pts

10▲17Lake County, MTMT33,3920.2%−0.1 pts

11▼2Judith Basin County, MTMT2,1620.1%–

12▲8Stillwater County, MTMT9,4450.1%–

13▼5Sanders County, MTMT14,0620.1%−0.3 pts

14▲12Carbon County, MTMT11,4660.1%−0.1 pts

15Lewis and Clark County, MTMT75,3310.1%−0.5 pts

16▲5Yellowstone County, MTMT172,6920.1%0.0 pts

17Lincoln County, MTMT22,3280.1%−0.7 pts

18▼11Beaverhead County, MTMT10,0430.1%0.0 pts

19▲17Sheridan County, MTMT3,4360.1%–

20▲11Richland County, MTMT11,3770.1%–

21▲4Hill County, MTMT16,1670.1%0.0 pts

22Musselshell County, MTMT5,5820.1%−0.2 pts

23Blaine County, MTMT6,8600.1%–

24▼7Sweet Grass County, MTMT3,7620.1%–

25Fergus County, MTMT11,8250.0%0.0 pts

26▼13Park County, MTMT18,2140.0%−0.6 pts

27▲11Chouteau County, MTMT5,8650.0%−0.2 pts

28▲6Dawson County, MTMT8,6920.0%–

29▲8Roosevelt County, MTMT10,2420.0%0.0 pts

30Glacier County, MTMT13,4630.0%−0.1 pts

SHOWING 1–30 OF 30

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