Delaware County Demographics

A map of Delaware County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	179,540	171,420	79.2%	80.1%
Asian	19,472	18,158	8.6%	8.5%
Black	9,834	7,702	4.3%	3.6%
Multiracial	9,038	8,707	4.0%	4.1%
Hispanic	7,899	7,012	3.5%	3.3%
Native American/Other	1,051	1,125	0.5%	0.5%

Delaware County, Ohio has an estimated population of 226,834, an increase from the 214,124 recorded in the 2020 Census. The population is 79.2% White, 8.6% Asian, 4.3% Black, 4.0% Multiracial, 3.5% Hispanic, and 0.5% Native American/Other. This demographic dot map shows the population of Delaware County, with one dot drawn for each person counted by the Census, color-coded by race.

Delaware has become more racially diverse since the 2020 Census. It is less diverse than Ohio overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Delaware County, that probability was 34.8% in 2020 and 36.1% in the most recent ACS estimates.

Delaware County is ranked the 12th most populous county in Ohio, out of 88 counties. Delaware County was ranked the 13th most populous county in the 2020 Census.

Delaware County's White Population

179,540 residents of Delaware County, or 79.2% of the population, identify as White. The share of White residents in Delaware County is slightly higher than in Ohio overall, where 75.8% of the population is White. Delaware County ranks 78th statewide in terms of White residents as a share of the population, out of 88 counties.

Since the 2020 Census, Delaware County's White population has grown by an estimated 4.7%. White residents' share of Delaware County's population has decreased from 80.1% to 79.2%.

Delaware County is more White than neighboring Franklin County (58% White). Delaware County is less White than neighboring Morrow County (93.7% White), Marion County (86.3% White), Union County (84.5% White), and Madison County (86.2% White).

Delaware County's Black Population

9,834 residents of Delaware County, or 4.3% of the population, identify as Black. The share of Black residents in Delaware County is lower than in Ohio overall, where 12% of the population is Black. Delaware County ranks 28th statewide in terms of Black residents as a share of the population, out of 88 counties.

Since the 2020 Census, Delaware County's Black population has grown by an estimated 27.7%. Black residents' share of Delaware County's population has increased from 3.6% to 4.3%.

Delaware County is more Black than neighboring Morrow County (0.4% Black), and Union County (2.3% Black). Delaware County is less Black than neighboring Franklin County (23.1% Black), and Marion County (4.7% Black).

Delaware County's Asian Population

19,472 residents of Delaware County, or 8.6% of the population, identify as Asian. The share of Asian residents in Delaware County is higher than in Ohio overall, where 2.5% of the population is Asian. Delaware County ranks 1st statewide in terms of Asian residents as a share of the population, out of 88 counties.

Since the 2020 Census, Delaware County's Asian population has grown by an estimated 7.2%. Asian residents' share of Delaware County's population has remained roughly unchanged at 8.6%.

Delaware County is more Asian than neighboring Franklin County (5.6% Asian), Morrow County (0.4% Asian), Marion County (0.6% Asian), Union County (5% Asian), and Madison County (1.3% Asian).

Delaware County's Hispanic Population

7,899 residents of Delaware County, or 3.5% of the population, identify as Hispanic. The share of Hispanic residents in Delaware County is comparable to the share in Ohio overall, where 4.8% of the population is Hispanic. Delaware County ranks 27th statewide in terms of Hispanic residents as a share of the population, out of 88 counties.

Since the 2020 Census, Delaware County's Hispanic population has grown by an estimated 12.6%. Hispanic residents' share of Delaware County's population has remained roughly unchanged at 3.5%.

Delaware County is more Hispanic than neighboring Morrow County (1.9% Hispanic), Marion County (3.2% Hispanic), Union County (3.4% Hispanic), and Madison County (3.1% Hispanic). Delaware County is less Hispanic than neighboring Franklin County (7.5% Hispanic).

Delaware County's Native American/Other Population

1,051 residents of Delaware County, or 0.5% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Delaware County is comparable to the share in Ohio overall, where 0.5% of the population is Native American/Other. Delaware County ranks 28th statewide in terms of Native American/Other residents as a share of the population, out of 88 counties.

Since the 2020 Census, Delaware County's Native American/Other population has declined by an estimated 6.6%. Native American/Other residents' share of Delaware County's population has remained roughly unchanged at 0.5%.

Delaware County is more Native American/Other than neighboring Morrow County (0.3% Native American/Other). Delaware County is less Native American/Other than neighboring Franklin County (0.6% Native American/Other), Marion County (0.6% Native American/Other), Union County (0.6% Native American/Other), and Madison County (0.6% Native American/Other).

Delaware County's Multiracial Population

9,038 residents of Delaware County, or 4.0% of the population, identify as Multiracial. The share of Multiracial residents in Delaware County is comparable to the share in Ohio overall, where 4.3% of the population is Multiracial. Delaware County ranks 31st statewide in terms of Multiracial residents as a share of the population, out of 88 counties.

Since the 2020 Census, Delaware County's Multiracial population has grown by an estimated 3.8%. Multiracial residents' share of Delaware County's population has remained roughly unchanged at 4.0%.

Delaware County is more Multiracial than neighboring Morrow County (3.2% Multiracial). Delaware County is less Multiracial than neighboring Franklin County (5.2% Multiracial), Marion County (4.6% Multiracial), Union County (4.2% Multiracial), and Madison County (4.5% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.