Census Charts Index > Montana

Montana Census Data: Age & Sex by County

Age and sex distributions for Montana counties are shown in this easy-to-read table and chart combination.

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Source: U.S. Census Bureau 2000 Census.


Montana Census Data: Age & Sex by County
LocationPopulationAge %Median
Age
Males per 100 FemalesLocation
under 1818-2425-4445-6465 & overAll Ages18 & Over
United States

281,421,906

25.79.630.222.012.4

35.3

96.393.4United States
Montana

902,195

25.59.527.224.413.4

37.5

99.397.2Montana
Beaverhead Co.9,20224.611.925.124.913.6

37.6

105.0102.5Beaverhead Co.
Big Horn Co.12,67135.88.626.520.58.6

29.8

97.391.0Big Horn Co.
Blaine Co.7,00932.68.024.821.612.9

34.4

97.596.3Blaine Co.
Broadwater Co.4,38525.24.826.227.416.4

41.3

104.0103.7Broadwater Co.
Carbon Co.9,55224.05.726.127.316.8

41.9

100.497.3Carbon Co.
Carter Co.1,36026.54.124.926.517.9

41.8

94.896.7Carter Co.
Cascade Co.80,35726.09.128.122.814.0

36.7

97.995.7Cascade Co.
Chouteau Co.5,97028.86.524.123.117.5

39.3

100.897.1Chouteau Co.
Custer Co.11,69625.18.425.623.817.1

39.3

95.891.2Custer Co.
Daniels Co.2,01722.14.920.029.523.5

47.0

96.097.9Daniels Co.
Dawson Co.9,05923.18.824.925.417.7

41.0

98.399.9Dawson Co.
Deer Lodge Co.9,41722.57.924.026.818.8

42.3

99.897.3Deer Lodge Co.
Fallon Co.2,83725.56.225.524.817.9

41.1

102.296.7Fallon Co.
Fergus Co.11,89324.56.123.625.819.9

42.4

94.893.4Fergus Co.
Flathead Co.74,47125.97.427.426.413.0

39.0

98.396.1Flathead Co.
Gallatin Co.67,83122.018.530.420.68.5

30.7

108.3108.7Gallatin Co.
Garfield Co.1,27924.57.123.325.819.3

41.6

106.6103.4Garfield Co.
Glacier Co.13,24734.99.126.919.99.2

30.6

97.994.1Glacier Co.
Golden Valley Co.1,04227.65.923.027.016.5

41.5

107.2103.2Golden Valley Co.
Granite Co.2,83024.25.723.330.815.9

42.8

105.1102.6Granite Co.
Hill Co.16,67328.211.626.021.412.8

34.5

99.396.4Hill Co.
Jefferson Co.10,04927.85.226.829.910.3

40.2

100.8100.4Jefferson Co.
Judith Basin Co.2,32926.84.623.328.217.2

42.0

107.9103.9Judith Basin Co.
Lake Co.26,50728.18.024.524.914.5

38.2

96.793.1Lake Co.
Lewis and Clark Co.55,71625.68.527.926.211.7

38.0

96.594.0Lewis and Clark Co.
Liberty Co.2,15825.85.824.724.119.7

41.5

97.193.6Liberty Co.
Lincoln Co.18,83725.35.524.229.715.2

42.1

102.7100.5Lincoln Co.
McCone Co.1,97724.85.424.326.518.9

42.4

99.7103.3McCone Co.
Madison Co.6,85122.94.925.030.117.2

43.4

102.3103.9Madison Co.
Meagher Co.1,93225.06.122.728.118.2

42.8

100.4100.4Meagher Co.
LocationPopulationAge %Median
Age
Males per 100 FemalesLocation
under 1818-2425-4445-6465 & overAll Ages18 & Over
United States

281,421,906

25.79.630.222.012.4

35.3

96.393.4United States
Montana

902,195

25.59.527.224.413.4

37.5

99.397.2Montana
Mineral Co.3,88424.36.425.329.814.2

41.1

106.2105.6Mineral Co.
Missoula Co.95,80222.915.429.222.610.0

33.2

99.998.0Missoula Co.
Musselshell Co.4,49723.45.724.029.417.5

43.2

95.495.7Musselshell Co.
Park Co.15,69423.56.527.927.114.9

40.6

97.496.1Park Co.
Petroleum Co.49326.06.122.728.217.0

41.1

110.7111.0Petroleum Co.
Phillips Co.4,60127.35.524.525.117.6

40.8

100.495.6Phillips Co.
Pondera Co.6,42429.66.424.822.916.3

38.6

97.495.4Pondera Co.
Powder River Co.1,85826.64.823.326.818.5

42.1

97.295.4Powder River Co.
Powell Co.7,18021.27.830.826.214.0

39.7

143.2151.4Powell Co.
Prairie Co.1,19918.74.320.032.924.1

48.9

106.7106.1Prairie Co.
Ravalli Co.36,07025.66.224.728.015.5

41.1

98.695.4Ravalli Co.
Richland Co.9,66727.56.426.823.815.6

39.2

98.794.9Richland Co.
Roosevelt Co.10,62034.67.925.820.211.6

32.3

98.393.7Roosevelt Co.
Rosebud Co.9,38333.57.225.724.88.9

34.5

100.999.2Rosebud Co.
Sanders Co.10,22723.85.522.131.816.9

44.2

102.1100.5Sanders Co.
Sheridan Co.4,10522.94.822.226.523.6

45.1

98.796.8Sheridan Co.
Silver Bow Co.34,60623.79.626.724.016.0

38.9

97.896.3Silver Bow Co.
Stillwater Co.8,19525.35.726.927.614.5

40.8

104.0102.8Stillwater Co.
Sweet Grass Co.3,60926.05.324.726.417.6

41.2

99.598.1Sweet Grass Co.
Teton Co.6,44527.36.124.625.416.6

40.0

97.096.0Teton Co.
Toole Co.5,26725.56.828.223.615.9

39.1

106.5107.2Toole Co.
Treasure Co.86127.85.023.227.316.7

41.8

104.0101.9Treasure Co.
Valley Co.7,67525.16.024.325.619.0

41.7

98.295.1Valley Co.
Wheatland Co.2,25926.86.422.025.519.3

41.4

98.099.2Wheatland Co.
Wibaux Co.1,06825.85.822.524.321.5

42.3

92.492.2Wibaux Co.
Yellowstone Co.129,35225.59.328.723.213.3

36.9

95.291.6Yellowstone Co.

Reading the Chart:

The entries under the Age % heading are percentages showing the age distribution. For example, the entry in the first row (United States) in the under 18 column is 25.7, meaning that 25.7% of the U.S. population is under 18 years of age. The Age% values add up to approximately 100%.

The length of the colored bars in each Age % table cell are in proportion to the value of the number in the cell. For example, the colored bar in the cell showing 25.7 is 25.7% as wide as the cell.

The length of the colored bars under the Males per 100 Females header are proportional to the value when converted to percentages. For example, 110 males per 100 females = 110 males per 210 people = 52.4%.

The numeric values under the Population header are totals. Here the colored bars represent percentages of the highest population of any county in the state. For example, the county with the highest population will have a colored bar that fills the cell. A county with half that many people will have a colored bar that fills half the cell. For small percentages the bar does not appear.

Abbreviations used in location names: Co.=County, C.A.=Census Area, Pa.=Parish, Mu.=Municipio.

Interested in Montana? Check out Montana Climate for data and charts about average weather, daylight, and global warming.

Please note that if you set your browser to display very large text sizes, the table cell sizes will change, and the lengths of the colored bars will not be accurate, although they will still show proportions.

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