Putnam County Demographics

A map of Putnam County's Population by Race

Putnam County, Ohio has an estimated population of 34,314, a less than 1% change from the 34,451 recorded in the 2020 Census. The population is 90.8% White, 6.7% Hispanic, 1.2% Multiracial, 0.5% Black, 0.5% Native American/Other, and 0.2% Asian. This demographic dot map shows the population of Putnam County, with one dot drawn for each person counted by the Census, color-coded by race.

Putnam has become slightly more racially diverse since the 2020 Census. It is considerably 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 Putnam County, that probability was 16.3% in 2020 and 17.1% in the most recent ACS estimates.

Putnam County is ranked the 70th most populous county in Ohio, out of 88 counties. Putnam County was ranked the 70th most populous county in the 2020 Census.

Putnam County's White Population

31,149 residents of Putnam County, or 90.8% of the population, identify as White. The share of White residents in Putnam County is considerably higher than in Ohio overall, where 75.8% of the population is White. Putnam County ranks 35th statewide in terms of White residents as a share of the population, out of 88 counties.

Since the 2020 Census, Putnam County's White population has remained roughly the same. White residents' share of Putnam County's population has remained roughly unchanged at 90.8%.

Putnam County is more White than neighboring Allen County (79% White), Henry County (87.8% White), Paulding County (90% White), Hancock County (86.9% White), and Defiance County (84.7% White).

Putnam County's Black Population

183 residents of Putnam County, or 0.5% of the population, identify as Black. The share of Black residents in Putnam County is considerably lower than in Ohio overall, where 12% of the population is Black. Putnam County ranks 85th statewide in terms of Black residents as a share of the population, out of 88 counties.

Since the 2020 Census, Putnam County's Black population has grown by an estimated 83.0%. Black residents' share of Putnam County's population has remained roughly unchanged at 0.5%.

Putnam County is more Black than neighboring Paulding County (0.2% Black). Putnam County is less Black than neighboring Allen County (9.6% Black), Hancock County (1.8% Black), and Defiance County (1.6% Black).

Putnam County's Asian Population

55 residents of Putnam County, or 0.2% of the population, identify as Asian. The share of Asian residents in Putnam County is slightly lower than in Ohio overall, where 2.5% of the population is Asian. Putnam County ranks 80th statewide in terms of Asian residents as a share of the population, out of 88 counties.

Since the 2020 Census, Putnam County's Asian population has declined by an estimated 9.8%. Asian residents' share of Putnam County's population has remained roughly unchanged at 0.2%.

Putnam County is more Asian than neighboring Henry County (0.1% Asian). Putnam County is less Asian than neighboring Allen County (0.9% Asian), Paulding County (0.5% Asian), and Hancock County (1.9% Asian).

Putnam County's Hispanic Population

2,315 residents of Putnam County, or 6.7% of the population, identify as Hispanic. The share of Hispanic residents in Putnam County is comparable to the share in Ohio overall, where 4.8% of the population is Hispanic. Putnam County ranks 11th statewide in terms of Hispanic residents as a share of the population, out of 88 counties.

Since the 2020 Census, Putnam County's Hispanic population has grown by an estimated 3.9%. Hispanic residents' share of Putnam County's population has remained roughly unchanged at 6.7%.

Putnam County is more Hispanic than neighboring Allen County (3.6% Hispanic), Paulding County (5.8% Hispanic), and Hancock County (6.1% Hispanic). Putnam County is less Hispanic than neighboring Henry County (8.3% Hispanic), and Defiance County (11.1% Hispanic).

Putnam County's Native American/Other Population

186 residents of Putnam 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 Putnam County is comparable to the share in Ohio overall, where 0.5% of the population is Native American/Other. Putnam County ranks 85th statewide in terms of Native American/Other residents as a share of the population, out of 88 counties.

Since the 2020 Census, Putnam County's Native American/Other population has grown by an estimated 109.0%. Native American/Other residents' share of Putnam County's population has remained roughly unchanged at 0.5%.

Putnam County is more Native American/Other than neighboring Paulding County (0.1% Native American/Other), Hancock County (0.2% Native American/Other), and Defiance County (0.2% Native American/Other). Putnam County is less Native American/Other than neighboring Allen County (0.6% Native American/Other), and Henry County (0.7% Native American/Other).

Putnam County's Multiracial Population

426 residents of Putnam County, or 1.2% of the population, identify as Multiracial. The share of Multiracial residents in Putnam County is slightly lower than in Ohio overall, where 4.3% of the population is Multiracial. Putnam County ranks 87th statewide in terms of Multiracial residents as a share of the population, out of 88 counties.

Since the 2020 Census, Putnam County's Multiracial population has declined by an estimated 21.8%. Multiracial residents' share of Putnam County's population has remained roughly unchanged at 1.2%.

Putnam County is less Multiracial than neighboring Allen County (6.2% Multiracial), Henry County (2.6% Multiracial), Paulding County (3.4% Multiracial), Hancock County (3% Multiracial), and Defiance County (2.1% 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.