RANKING · 2010 CENSUS · 31 SHOWN OF 31

Highest Portuguese population share, Montana counties · 2010

Montana counties ranked by the share of all residents who are Portuguese ancestry (2010 American Community Survey). A concentration measure: Portuguese residents as a percentage of total population. This list covers the 31 counties in Montana that qualify, ranked against each other statewide. The median across all 31 is 0.3%.

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 –

01Meagher County, MTMT2,1371.4%–

02Petroleum County, MTMT5480.8%–

03Lincoln County, MTMT22,3280.8%–

04Ravalli County, MTMT48,5820.7%–

05Park County, MTMT18,2140.6%–

06Lewis and Clark County, MTMT75,3310.6%–

07Madison County, MTMT10,0260.5%–

08Granite County, MTMT3,6580.5%–

09Sanders County, MTMT14,0620.4%–

10Gallatin County, MTMT128,7400.4%–

11Teton County, MTMT6,4960.3%–

12Cascade County, MTMT85,0290.3%–

13Musselshell County, MTMT5,5820.3%–

14Missoula County, MTMT123,5130.3%–

15Flathead County, MTMT115,4290.3%–

16Carbon County, MTMT11,4660.3%–

17Chouteau County, MTMT5,8650.3%–

18Lake County, MTMT33,3920.3%–

19Powell County, MTMT7,1570.2%–

20Beaverhead County, MTMT10,0430.2%–

21Silver Bow County, MTMT36,1180.1%–

22Deer Lodge County, MTMT9,7090.1%–

23Glacier County, MTMT13,4630.1%–

24Custer County, MTMT12,0340.1%–

25Yellowstone County, MTMT172,6920.1%–

26Mineral County, MTMT5,1850.1%–

27Big Horn County, MTMT12,7520.0%–

28Jefferson County, MTMT13,3290.0%–

29Hill County, MTMT16,1670.0%–

30Fergus County, MTMT11,8250.0%–

31Roosevelt County, MTMT10,2420.0%–

SHOWING 1–31 OF 31

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS