Lewis and Clark

County in Montana

County

The population development of Lewis and Clark.

Name	Status	Population Census 1990-04-01	Population Census 2000-04-01	Population Census 2010-04-01	Population Census 2020-04-01	Population Estimate 2024-07-01
Lewis and Clark	County	47,495	55,716	63,395	70,971	75,129	→
Montana	State	799,065	902,195	989,415	1,084,216	1,137,233

Contents: Incorporated Places

The population development of the incorporated places in Lewis and Clark.

The Details icon links to further information about a selected place including its population structure (gender, age groups, age distribution, urbanization, »race«, ethnicity).

Name	Status	County	Population Census 1990-04-01	Population Census 2000-04-01	Population Census 2010-04-01	Population Census 2020-04-01	Population Estimate 2024-07-01
East Helena	City	Lewis and Clark	1,616	2,072	2,025	1,945	2,239	→
Helena	City	Lewis and Clark	24,572	26,145	28,811	32,112	34,729	→

Source: U.S. Census Bureau.

Explanation: Latest available rebased population figures are used. In case of significant changes, they were recalculated by using census block data.

Further information about the population structure:

Gender (C 2020)
Males	34,954
Females	36,019

Age Groups (C 2020)
0-17 years	15,288
18-64 years	41,810
65+ years	13,875

Age Distribution (C 2020)
80+ years	2,562
70-79 years	6,279
60-69 years	10,394
50-59 years	9,359
40-49 years	8,084
30-39 years	9,529
20-29 years	7,798
10-19 years	8,704
0-9 years	8,264

Urbanization (C 2020)
Rural	18,593
Urban	52,380

»Race« (C 2020)
White	63,037
Black/African American	282
Indigenous	1,363
Asian	559
Pacific Islander	54
Some other	673
2 or more	5,005

Ethnicity (C 2020)
Hispanic or Latino	2,599
Other	68,374