Jefferson County Population 2018

Jefferson County's estimated population is 31,234 with a growth rate of 1.05% in the past year according to the most recent United States census data. Jefferson County is the 27th largest county in Washington.

Year Population Growth Growth Rate
201731,2343251.05%
201630,9095591.84%
201530,3502150.71%
201430,1351450.48%
201329,9902080.70%
201229,782-53-0.18%
201129,835-52-0.17%
201029,8879,74148.35%
199020,1464,18126.19%
198015,9655,30449.75%
197010,6611,02210.60%
19609,639-1,979-17.03%
195011,6182,70030.28%
19408,9185726.85%
19308,3461,78927.28%
19206,557-1,780-21.35%
19108,3372,62545.96%
19005,712-2,656-31.74%
18908,3686,656388.79%
18801,71244435.02%
18701,268737138.79%
18605310.00%

Jefferson County Population Growth

Population Data via

Jefferson County Race Data

Race Population Percentage
White27,84989.16%
Two or More Races9963.19%
American Indian and Alaska Native6852.19%
Asian5381.72%
Black or African American3030.97%
Native Hawaiian and Other Pacific Islander750.24%

Jefferson County Population Pyramid

0k1k1k2k2k Male Population0k1k1k2k2k 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