Gallatin County Population 2018

Gallatin County's estimated population is 107,810 with a growth rate of 3.59% in the past year according to the most recent United States census data. Gallatin County is the 3rd largest county in Montana.

Year Population Growth Growth Rate
2017107,8103,7383.59%
2016104,0723,7383.73%
2015100,3343,3053.41%
201497,0292,6082.76%
201394,4211,9152.07%
201292,5061,2111.33%
201191,2951,6921.89%
201089,60339,14077.56%
199050,4637,59817.73%
198042,86510,36031.87%
197032,5056,46024.80%
196026,0454,14318.92%
195021,9023,63319.89%
194018,2692,14513.30%
193016,1242601.64%
192015,8641,78512.68%
191014,0794,52647.38%
19009,5533,30752.95%
18906,2462,60371.45%
18803,6432,065130.86%
18701,5780.00%

Gallatin County Population Growth

Population Data via

Gallatin County Race Data

Race Population Percentage
White95,92788.98%
Two or More Races1,8881.75%
Asian1,3601.26%
American Indian and Alaska Native1,0150.94%
Black or African American4410.41%
Native Hawaiian and Other Pacific Islander1050.10%

Gallatin County Population Pyramid

0k2k4k6k8k Male Population0k2k4k6k8k Female Population8580757065605550454035302520151050
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