Lewis and Clark County Population 2017

Lewis and Clark County's estimated population is 67,282 with a growth rate of 1.21% in the past year according to the most recent United States census data. Lewis and Clark County is the 6th largest county in Montana.

Year Population Growth Growth Rate
201667,2828031.21%
201566,4795180.79%
201465,9615960.91%
201365,3655060.78%
201264,8595960.93%
201164,2636601.04%
201063,60316,10833.92%
199047,4954,45610.35%
198043,0399,75829.32%
197033,2815,27518.84%
196028,0063,46614.12%
195024,5402,40910.89%
194022,1313,90721.44%
193018,224-436-2.34%
192018,660-3,193-14.61%
191021,8532,68213.99%
190019,171260.14%
189019,14512,624193.59%
18806,5211,48129.38%
18705,0400.00%

Lewis and Clark County Population Growth

Population Data via

Lewis and Clark County Race Data

Race Population Percentage
White62,61893.07%
Two or More Races1,5762.34%
American Indian and Alaska Native1,4292.12%
Asian4790.71%
Black or African American3170.47%
Native Hawaiian and Other Pacific Islander600.09%

Lewis and Clark County Population Pyramid

0k1k1k2k2k3kLewis and Clark County Male Population0k1k1k2k2k3kLewis and Clark County Female Population

Population of Cities in Lewis and Clark County

City 2010 Census 2016 Estimated Growth Growth Rate
Helena2822031169294910.45%
East Helena20112074633.13%
Data Sources
  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990