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Ohio ZIP Codes
Mercer County
Montezuma, OH
45866
45866 ZIP Code — Montezuma, OH
Mercer County, Ohio
ZIP code 45866 is located in
Montezuma ,
Ohio ,
within Mercer County .
It covers approximately 0.10 square miles and serves a population of
104 residents.
This is a standard ZIP code in the Eastern (ET) timezone,
served by area code 419/567 .
45866 ZIP code map
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Cities in ZIP code 45866
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Demographics
updated 05/2026
Population
Total population
104
Population density
1,040 / sq mi
State FIPS
39
County FIPS
107
Geography
Land area
0.10 sq mi
Water area
0.00 sq mi
Latitude
40.4859
Longitude
-84.5474
Timezone
Eastern (ET)
Area code
419/567
Economics
updated 05/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
60.7%
36.8%
43.3%
$50k – $100k
34.4%
38.2%
31.4%
$100k – $200k
4.9%
21.4%
20.0%
Over $200k
0.0%
3.6%
5.2%
Demographics & statistics
$73,125
Median household income
$102,500
Median home value
18.6%
Bachelor's or higher
Age distribution
Age summary
Group Count %
Under 18 4 3.8%
18 and over 100 96.2%
65 and over 33 31.7%
Median age 59.3 years
Race & ethnicity
Household income
Income range
This ZIP
County avg
State avg
Under $50k
60.7%
36.8%
43.3%
$50k – $100k
34.4%
38.2%
31.4%
$100k – $200k
4.9%
21.4%
20.0%
Over $200k
0.0%
3.6%
5.2%
Range % of households
$15k–$25k 9.1%
$25k–$35k 3.6%
$35k–$50k 32.7%
$50k–$75k 7.3%
$75k–$100k 41.8%
$100k–$150k 3.6%
$150k–$200k 1.8%
Median income $73,125
Housing
Housing overview
Metric Value
Median home value $102,500
Median rent / month $0
Owner occupied 94.5%
Renter occupied 5.5%
Vacant 29.5%
Single-family detached 98.7%
Large apartment buildings 0.0%
Mobile homes 0.0%
Median rooms 6.2
Avg household size (owned) 1.88
Year built
Era %
2020 or later 0.0%
2010–2019 0.0%
2000–2009 0.0%
1990–1999 7.7%
1980–1989 0.0%
1970–1979 6.4%
1960–1969 0.0%
1950–1959 42.3%
1940–1949 7.7%
1939 or earlier 35.9%
Bedrooms
Size % of units
No bedroom (studio) 0.0%
1 bedroom 11.5%
2 bedrooms 19.2%
3 bedrooms 42.3%
4 bedrooms 20.5%
5+ bedrooms 6.4%
Vehicles per household
Vehicles % of households
No vehicle 3.6%
1 vehicle 7.3%
2 vehicles 61.8%
3 or more 27.3%
Heating fuel
Fuel type %
Utility gas 89.1%
Electricity 9.1%
No fuel used 1.8%
Households & families
Household type Count %
Married-couple family 32 58.2%
Cohabiting couple 6 10.9%
Male householder, no spouse 11 20.0%
Female householder, no spouse 6 10.9%
Households with children under 18 4 7.3%
Households with seniors (65+) 23 41.8%
Average household size 1.89
Marital status
Status Male Female
Never married 16.4% 6.7%
Married 58.2% 73.3%
Separated 0.0% 4.4%
Widowed 5.5% 15.6%
Divorced 20.0% 0.0%
Education
Some college, no degree
12.4%
Graduate / professional
0.0%
Metric %
HS diploma or higher 99.0%
Bachelor's or higher 18.6%
School enrollment (ages 3–17)
Type Count %
Nursery / preschool 0 0.0%
Kindergarten 0 0.0%
Elementary school 1 100.0%
High school 0 0.0%
College / grad school 0 0.0%
Employment
Industry of employment
Finance & real estate
13.6%
Education & healthcare
11.4%
Arts, food & hospitality
9.1%
Professional & management
2.3%
Occupation
Category %
Management, business & arts 22.7%
Service 13.6%
Sales & office 4.5%
Natural resources & construction 9.1%
Production & transportation 50.0%
Employment type
Type %
Private sector 90.9%
Government 4.5%
Self-employed 4.5%
Unpaid family workers 0.0%
Commute
Method %
Drive alone 90.9%
Carpool 0.0%
Public transit 0.0%
Walk 0.0%
Work from home 9.1%
Other means 0.0%
Avg commute (minutes) 17.4
Poverty
Married-couple families
0.0%
Female-led households
0.0%
Income support
Source % of households
Social Security 63.6%
Retirement income 30.9%
Supplemental Security 0.0%
Cash public assistance 0.0%
Food stamps / SNAP 0.0%
Health indicators
Condition %
Obesity 32.9%
High blood pressure 29.5%
High cholesterol 29.1%
Diabetes 9.1%
Heart disease 6.1%
Stroke 2.7%
Asthma 9.4%
Arthritis 24.5%
Kidney disease 2.5%
Pulmonary disease 7.4%
Cancer 6.3%
Behavior / access %
Smoking 20.3%
Binge drinking 19.0%
No physical activity 24.9%
Less than 7 hrs sleep 33.0%
Depression 21.8%
Fair or poor health 12.5%
Poor mental health 16.1%
Poor physical health 9.4%
No health insurance 11.1%
Visited doctor (checkup) 72.9%
Visited dentist 65.2%
Cholesterol screening 87.1%
Teeth loss 14.0%
Veterans & disability
Veterans Count %
Civilian veterans 24 24.0%
Disability %
Any disability 29.8%
Under 18 0.0%
18–64 years 23.9%
65 and over 45.5%
Health insurance coverage
Type %
Private insurance 78.8%
Public insurance 54.8%
No insurance 9.6%
Uninsured under 19 0.0%
Language & origin
Language spoken at home (age 5+)
Language Count %
English only 101 97.1%
Spanish 0 0.0%
Other Indo-European 0 0.0%
Asian & Pacific Islander 0 0.0%
Other languages 0 0.0%
Place of birth & citizenship
Origin Count %
Native born (US) 104 100.0%
Born in same state 104 100.0%
Born in different state 95 91.3%
Foreign born 0 0.0%
Naturalized citizen 0 0.0%
Not a US citizen 0 0.0%
Ancestry
Ancestry Count %
Italian 13 12.5%
French 11 10.6%
Technology access
Metric % of households
Computer access 52.9%
Internet access 85.5%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 45866
What city is ZIP code 45866 in?
ZIP code 45866 is primarily assigned to Montezuma, Ohio.
What county is ZIP code 45866 in?
ZIP code 45866 falls within Mercer County, Ohio.
Does ZIP code 45866 have a large retiree population?
64% of households in ZIP code 45866 receive Social Security income, suggesting a significant retiree or disability population.
Does ZIP code 45866 have an older population?
32% of residents in ZIP code 45866 are 65 or older, above the national average of ~17%.
Is ZIP code 45866 mostly owner-occupied?
95% of occupied units in ZIP code 45866 are owner-occupied, well above the national average.
Does ZIP code 45866 have a large veteran population?
24% of civilians in ZIP code 45866 are veterans, above the national average of ~7%.
What timezone is ZIP code 45866 in?
ZIP code 45866 observes the EST timezone.
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