John Cook Farm · National Register of Historic Places
Harlem’s story
Harlem in pictures
1 places on the National Register of Historic Places.
Explore the history →HarlemOH
A town of 4,879. Healthier than 88% of U.S. towns.
Population
4,879
+15.2% since 2010
Median home value
$419K
Census ACS
Household income
$122K
median
Median age
43.1
years
Jobs based here
479
A commuter town
What makes Harlem stand out
The 2 things Harlem does most differently from other towns.
A growing town
Harlem has grown 15.2% since 2010
3,953 people in 2010; 4,879 today.
U.S. Census 2010 & 2020 · ACS
Harlem’s report card
Now in Harlem
Be the first to start the conversation.
Residents weigh in
Harlem is #16 of 1,022 in OH for “Lowest depression”. Fair?
Your answer becomes a post in Harlem’s Town Square.
Start a conversation
The data
Ordered by what stands out in Harlem. Another town gets a different order.
Health
Healthier than 88% of U.S. towns
Harlem beats the Ohio average on 22 of 32 CDC measures and trails it on 0.
AHealth Grade
32 measures vs. Ohio
22 better10 too close to call0 worse
| What stands out | Harlem | OH |
|---|---|---|
| Fewer older adults who have lost all their teeth | 7.8% | 15.3% |
| Fewer adults facing food insecurity | 7.3% | 14.1% |
Mount Carmel St. Ann's
8.2 mi away · emergency room
1 of 3
care shortages: mental health
95th
percentile among OH towns
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSAFull health report →
Work & commute
Most working residents commute out of Harlem
Most working residents leave Harlem for work: only 4% work in town. The top destinations are Columbus (39%), Westerville (9%) and New Albany (4%). Half commute less than 14 miles.
4%work in town
Where working residents work
In Harlem4%
Columbus39%
Westerville9%
New Albany4%
Gahanna3%
14 mi
median commute distance
479
jobs based in Harlem
A commuter town
jobs vs. working residents
Census LEHD 2023 · ACSCommute map →
Schools
Harlem’s public schools outperform 81% of Ohio districts
The public schools Harlem’s kids attend, from kindergarten through graduation, outperform 81% of Ohio’s districts on state tests and graduation. Among towns with similar incomes, they sit near the middle.
A−School Grade
| School | Grades | Students | Grade |
|---|---|---|---|
| Hylen Souders Elementary School | K–3 | 289 | B+ |
NCES · EDFacts · graded within OH on state tests and graduationAll 1 schools →
Climate
Four seasons, pleasant summers
Harlem has chilly winters and warm summers. A typical July afternoon reaches 84°, a January night drops to 20°, and about 19 inches of snow falls in a normal winter.
19″snow a winter
Typical low → high °F
Winter23–38°
Spring40–62°
Summer61–83°
Fall43–64°
Oct 24
typical first frost
Apr 22
typical last frost
+1.1°
vs. the 20th-century average
NOAA U.S. Climate Normals, 1991–2020Full climate →
Natural hazards
Moderate risk, with inland flooding at the top
Expected storm and flood damage is higher than in 54% of U.S. communities.
54risk score of 100
FEMA risk score
Inland floodingTornadoes
4
paid flood claims since 1978
1
federal disasters paid out here
FEMA National Risk Index · OpenFEMANatural hazards →
Outdoors
0.1% of Harlem is conserved land
2.0 miles of trails across 0 parks and preserves.
0.1%conserved
0.1%
conserved · 16 of 16,906 acres
2.0 mi
of trails · 0.1 per sq mi
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-USParks & trails →
A commuter town
96% of working residents leave Harlem for work
Where Harlem’s working residents go each day. Line width shows the share.
479jobs based in Harlem
4%of working residents work in town
14 mimedian commute distance
Census LEHD 2023
About Harlem
Unincorporated community in Ohio, US
Harlem is an unincorporated community in Harlem Township, Delaware County, in the U.S. state of Ohio.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
Harlem’s neighbors
5 towns share a border with Harlem.
PlainGenoaTrentonMonroeHartfordHarlem