Hillsborough County Population 2018

Hillsborough County's estimated population is 409,697 with a growth rate of 0.49% in the past year according to the most recent United States census data. Hillsborough County is the 1st largest county in New Hampshire.

Year Population Growth Growth Rate
2017409,6971,9790.49%
2016407,7181,7090.42%
2015406,0099470.23%
2014405,0621,6910.42%
2013403,3716560.16%
2012402,7158860.22%
2011401,8297910.20%
2010401,03864,96519.33%
1990336,07359,46521.50%
1980276,60852,66723.52%
1970223,94145,78025.70%
1960178,16121,17413.49%
1950156,98712,0998.35%
1940144,8884,7233.37%
1930140,1654,6533.43%
1920135,5129,4407.49%
1910126,07213,43211.92%
1900112,64019,39320.80%
189093,24717,61323.29%
188075,63411,39617.74%
187064,2382,0983.38%
186062,1404,6628.11%
185057,47814,98435.26%
184042,4944,77012.64%
183037,724-16,160-29.99%
182053,8844,6359.41%
181049,2495,35012.19%
180043,89911,02833.55%
179032,8710.00%

Hillsborough County Population Growth

Population Data via

Hillsborough County Race Data

Race Population Percentage
White370,53390.44%
Asian15,8323.86%
Black or African American10,4742.56%
Two or More Races7,6371.86%
American Indian and Alaska Native1,2620.31%
Native Hawaiian and Other Pacific Islander2770.07%

Hillsborough County Population Pyramid

0k5k10k15k Male Population0k5k10k15k 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