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Dayton population

Dayton, Ohio had an estimated 136,688 residents on July 1, 2025, the 220th-largest city in the US. That is down 3.4% since the 2010 Census and down 17.4% since 2000.

DaytonOhioPop. 136,688
Population, July 2025
136,688-0.7% since April 2020
People per sq mile
2,44955.8 sq mi of land
Median age
34.114.1% are 65 or older
Households with kids
25.7%with anyone under 18

Population by year, 2000 to 2025

110k124k138k152k166k2000: 165,57920002001: 162,3562002: 159,97220022003: 157,9022004: 155,63720042005: 153,1402006: 150,47220062007: 147,8982008: 145,42520082009: 142,9212010: 141,52720102011: 141,9622012: 141,89120122013: 142,0232014: 141,11720142015: 140,8322016: 140,90720162017: 140,4392018: 140,47220182019: 140,4632020: 137,60420202021: 136,7852022: 135,97720222023: 135,9892024: 136,22420242025: 136,6882025
Darker bars are the April 2000, 2010 and 2020 benchmarks; the rest are July 1 estimates. Source: US Census Bureau population estimates (intercensal 2000-2010, Vintage 2020 and Vintage 2025).
YearPopulationChangeBasis
2025136,688+464Estimate, July 1
2024136,224+235Estimate, July 1
2023135,989+12Estimate, July 1
2022135,977-808Estimate, July 1
2021136,785-819Estimate, July 1
2020137,604-2,859April 2020 estimates base
2019140,463-9Estimate, July 1
2018140,472+33Estimate, July 1
2017140,439-468Estimate, July 1
2016140,907+75Estimate, July 1
2015140,832-285Estimate, July 1
2014141,117-906Estimate, July 1
2013142,023+132Estimate, July 1
2012141,891-71Estimate, July 1
2011141,962+435Estimate, July 1
2010141,527-1,3942010 Census (April 1)
2009142,921-2,504Estimate, July 1
2008145,425-2,473Estimate, July 1
2007147,898-2,574Estimate, July 1
2006150,472-2,668Estimate, July 1
2005153,140-2,497Estimate, July 1
2004155,637-2,265Estimate, July 1
2003157,902-2,070Estimate, July 1
2002159,972-2,384Estimate, July 1
2001162,356-3,223Estimate, July 1
2000165,579April 2000 estimates base

Year-to-year changes across 2010 and 2020 mix census counts with estimates, so small jumps at those years are partly method changes.

Frequently asked questions

What is the population of Dayton in 2025?

The Census Bureau estimates Dayton had 136,688 residents on July 1, 2025, making it the 220th-largest city in the US.

Is Dayton growing?

No. Dayton has shrunk 3.4% since the 2010 Census (141,527 people), and shrunk 0.7% since 2020.

What was the population of Dayton in 2000?

About 165,579 (the Census Bureau's April 2000 estimates base). By the 2010 Census it was 141,527.

How dense is Dayton?

Dayton has about 2,449 people per square mile of land (55.8 square miles).

More about Dayton

See cost of living, jobs and commutes in Dayton, Dayton weather by month, or every Dayton ZIP code. For the biggest cities in the country, see the largest US cities.