The poverty rate among those that worked full-time for the past 12 months was 3.69% . High birth rates and a healthy population have been the leading factors in population growth since 1998. Utah has historically had a young population. This was 0.043% of total US population and 4.6% of total Utah state population. In the 1990s, population growth was influenced by net migration to a greater extent than today, mostly due to a strong economy. The county's growth rate since the census is -4.46%. As of the 2010 United States Census, the population was 138,115, making it the fifth-most populous county in Utah. Other counties with a population of 5,000 or less include Piute County (1,420), Rich County (2,391), Wayne County (2,719), and Garfield County (5,078). Washington County, Utah is Multiple, with 9.73% below the poverty level. QuickFacts provides statistics for all states and counties, and for cities and towns with a population of 5,000 or more. For its size, Utah County shows a relatively high number of births and a low number of deaths, placing its natural increase not far behind population-dense Salt Lake County. Washington County population growth: What it will look like. A new report shows that tourists and snowbirds add about 30% to Washington County's resident population. Area of Washington County is 2,430.4 mi² (=6294.8 km²), in this year population density was 56.95 p/mi². Washington County is a county in the southwestern corner of Utah, United States. The least populated county in Utah is Daggett County with 1,029 residents. Although Washington and Cache counties showed roughly equivalent numbers of births, deaths in Washington County measured much higher. Current Washington County, Utah Population, Demographics and stats in 2020, 2019. The county was created in 1852 and organized in 1856. The race least likely to be in poverty in . How did it get so busy? Its county seat and largest city is St. George. QuickFacts Washington County, Utah. Tourists, snowbirds boost St. George area population nearly 30%. If population growth rate would be same as in period 2010-2014 (+0.05%/yr), Washington County population …