Ada ZIP Codes — Hardin County, OH

There is one unique ZIP code in Ada, Ohio and it is 45810. Area code: 326/419/567/937.

ZIP codes

65.56

sq mi land

0.07

sq mi water

326/419/567/937

area code

Ada, OH ZIP code map

About Ada, OH

Ada, Ohio is a charming village located in Hardin County. This small community is best known for its friendly atmosphere and welcoming residents. With a rich history and strong ties to education, Ada offers a unique blend of rural charm and institutional presence.

Location & geography

Ada is situated in northwestern Ohio, approximately 20 miles northeast of Lima and about 30 miles southwest of Findlay. The village encompasses a land area of 65.56 square miles, with a minuscule water area of 0.07 square miles, primarily consisting of land. The terrain is predominantly flat with agricultural landscapes, making it ideal for farming and outdoor activities.

Community & economy

The character of Ada is defined by its close-knit community, where residents take pride in their small-town values and vibrant local events. The economy largely revolves around education, healthcare, and agriculture, contributing to the village's stability. Daily life in Ada is enriched by local businesses, community gatherings, and a strong emphasis on education, particularly influenced by the presence of Ohio Northern University.

Transportation

Ada is accessible via State Route 235, which connects the village to neighboring towns and cities, providing convenient travel options for residents. The nearest major highways include Interstate 75, located roughly 25 miles to the west, enhancing connectivity to other parts of Ohio. For air travel, the closest airports are located in Lima and Findlay, offering regional service.

History

Ada was founded in the 19th century and has continually evolved through the years, becoming a center for education with the establishment of Ohio Northern University in 1871. Historically, the village has been an agricultural hub, contributing to the economy through farming and related industries. Notable events include community festivals that celebrate local heritage and the university's contributions to the village.

Did you know?

One surprising fact about Ada is that it is home to the Ohio Northern University, which draws students from across the nation, greatly influencing the local culture. Additionally, the village is known for hosting community events that foster local arts, including theater productions and music festivals.

ZIP codes for Ada, OH (1)

ZIP code	City	County	Map
45810	Ada	Hardin	View map

Demographics & statistics

7,654

Population

25.9

Median age

$56,213

Median household income

$25,023

Per capita income

$139,500

Median home value

$851

Median monthly rent

67.9%

Home ownership

14.1%

Poverty rate

3.1%

Unemployment

2,142

Housing units

30.3%

Bachelor's or higher

Age distribution

Male Female

Under 5

131

5–9

141

172

10–14

185

711

15–19

768

687

20–24

741

387

25–34

418

316

35–44

341

385

45–54

415

249

55–59

268

147

60–64

159

302

65–74

326

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,040	13.6%
18 and over	6,614	86.4%
65 and over	872	11.4%
Median age	25.9 years

Race & ethnicity

White 84.7%

Hispanic or Latino 3.9%

Two or more races 3.6%

Other race 2.9%

Black or African American 2.6%

Asian 2.4%

Group	Count	%
White	6,742	84.7%
Hispanic or Latino	307	3.9%
Two or more races	283	3.6%
Other race	228	2.9%
Black or African American	207	2.6%
Asian	194	2.4%

Household income

Under $10k 12.5%

$10k–$15k 1.9%

$15k–$25k 4.2%

$25k–$35k 6.8%

$35k–$50k 16.9%

$50k–$75k 20.4%

$75k–$100k 10.7%

$100k–$150k 14.6%

$150k–$200k 5.9%

$200k+ 6.1%

Range	% of households
Under $10k	12.5%
$10k–$15k	1.9%
$15k–$25k	4.2%
$25k–$35k	6.8%
$35k–$50k	16.9%
$50k–$75k	20.4%
$75k–$100k	10.7%
$100k–$150k	14.6%
$150k–$200k	5.9%
$200k+	6.1%
Median income	$56,213

Housing

Home values

Under $50k 14.5%

$50k–$100k 18.3%

$100k–$150k 23.6%

$150k–$200k 15.8%

$200k–$300k 22.8%

$300k–$500k 2.0%

$500k–$1M 3.1%

Housing overview

Metric	Value
Median home value	$139,500
Median rent / month	$851
Owner occupied	67.9%
Renter occupied	32.1%
Vacant	13.3%
Single-family detached	65.9%
Large apartment buildings	0.0%
Mobile homes	13.7%
Median rooms	5.7
Avg household size (owned)	2.39

Year built

Era	%
2020 or later	0.0%
2010–2019	6.3%
2000–2009	10.3%
1990–1999	13.8%
1980–1989	4.4%
1970–1979	20.4%
1960–1969	12.7%
1950–1959	7.1%
1940–1949	1.5%
1939 or earlier	23.6%

Bedrooms

Size	% of units
No bedroom (studio)	0.9%
1 bedroom	11.0%
2 bedrooms	27.3%
3 bedrooms	38.2%
4 bedrooms	16.7%
5+ bedrooms	5.9%

Vehicles per household

Vehicles	% of households
No vehicle	4.5%
1 vehicle	24.6%
2 vehicles	43.8%
3 or more	27.1%

Heating fuel

Fuel type	%
Utility gas	39.0%
Electricity	35.1%
Propane / LP gas	19.5%
Fuel oil	1.6%
Wood	3.5%
No fuel used	0.9%

Households & families

Household type	Count	%
Married-couple family	1,199	46.6%
Cohabiting couple	160	6.2%
Male householder, no spouse	551	21.4%
Female householder, no spouse	662	25.7%
Households with children under 18	525	20.4%
Households with seniors (65+)	590	22.9%
Average household size	2.28

Marital status

Status	Male	Female
Never married	52.0%	54.9%
Married	38.4%	34.4%
Separated	0.4%	0.7%
Widowed	1.3%	4.7%
Divorced	8.0%	5.3%

Education

Less than 9th grade 0.8%

Some HS, no diploma 2.8%

HS graduate 40.9%

Some college, no degree 16.7%

Associate's degree 8.5%

Bachelor's degree 18.0%

Graduate / professional 12.2%

Metric	%
HS diploma or higher	96.3%
Bachelor's or higher	30.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	18	0.5%
Kindergarten	68	1.9%
Elementary school	566	15.8%
High school	245	6.8%
College / grad school	2,695	75.0%

Employment

Industry of employment

Education & healthcare 29.3%

Manufacturing 16.8%

Retail trade 15.9%

Arts, food & hospitality 9.6%

Construction 7.6%

Transportation & utilities 5.6%

Professional & management 4.8%

Wholesale trade 3.5%

Finance & real estate 2.0%

Other services 1.8%

Public administration 1.6%

Information 0.9%

Agriculture & mining 0.6%

Occupation

Category	%
Management, business & arts	37.6%
Service	16.0%
Sales & office	18.5%
Natural resources & construction	8.6%
Production & transportation	19.3%

Employment type

Type	%
Private sector	78.4%
Government	14.0%
Self-employed	5.9%
Unpaid family workers	1.8%

Commute

Method	%
Drive alone	70.9%
Carpool	10.9%
Public transit	0.0%
Walk	10.9%
Other means	0.1%
Avg commute (minutes)	20.8

Poverty

All people 14.1%

Under 18 years 0.0%

18 and over 17.1%

Married-couple families 3.1%

Female-led households 0.0%

Income support

Source	% of households
Social Security	23.8%
Retirement income	24.6%
Supplemental Security	3.5%
Cash public assistance	0.4%
Food stamps / SNAP	7.9%

Health indicators

Condition	%
High blood pressure	24.1%
High cholesterol	23.8%
Heart disease	4.4%
Stroke	2.0%
Asthma	10.5%
Arthritis	17.8%
Kidney disease	2.0%
Pulmonary disease	5.9%
Cancer	4.3%

Behavior / access	%
Binge drinking	21.2%
No physical activity	22.2%
Less than 7 hrs sleep	34.7%
Fair or poor health	11.2%
Poor mental health	18.7%
Poor physical health	8.0%
No health insurance	11.3%
Visited doctor (checkup)	73.3%
Visited dentist	63.7%
Cholesterol screening	80.6%
Teeth loss	14.4%

Veterans & disability

Veterans	Count	%
Civilian veterans	327	4.9%

Disability	%
Any disability	10.5%
Under 18	4.0%
18–64 years	9.4%
65 and over	25.7%

Health insurance coverage

Type	%
Private insurance	81.3%
Public insurance	24.3%
Uninsured under 19	1.2%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	7,493	97.9%
Spanish	260	3.5%
Other Indo-European	90	1.2%
Asian & Pacific Islander	17	0.2%
Other languages	22	0.3%

Place of birth & citizenship

Origin	Count	%
Native born (US)	7,159	93.5%
Born in same state	7,129	93.1%
Born in different state	5,478	71.6%
Foreign born	30	0.4%
Naturalized citizen	495	6.5%
Not a US citizen	54	10.9%

Ancestry

Ancestry	Count	%
Italian	1,049	13.7%
French	955	12.5%
Arab	696	9.1%
English	202	2.6%

Ancestry	Count	%
Polish	109	1.4%
Irish	57	0.7%
German	15	0.2%
Dutch	8	0.1%

Technology access

Metric	% of households
Computer access	33.6%
Internet access	97.2%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What ZIP codes does Ada, OH have?

Ada, OH has one ZIP code: 45810. Each ZIP code serves a distinct delivery area within the city and surrounding region.