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Where 45812 is
Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.
- 🔢 Type 45812 into a pocket calculator and turn it upside down: ZIBSh — not quite a word, sorry.
- ➕ As a number, 45,812 = 2 × 2 × 13 × 881. Its digits add up to 20, a total 2,586 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1011001011110100 - 🏠 Its numerical neighbours: 45810 (Ada, OH, 7 mi away) and 45813 (Antwerp, OH, 60 mi away).
- 🔄 Backwards, 45812 becomes 21854, which is not a ZIP code at all.
- 👥 50 other ZIP codes are made of exactly the same digits (12458, 12485, 12548, 12584, 12845, 12854, …). The farthest-flung twin is 85214 in Mesa, AZ, 1,617 miles away.
- 🧭 Farther north than 63% of all ZIP codes, and farther east than 60%.
- 🎯780 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 45812 and you would come out at 40.68°S, 96.19°E — 1,246 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 15h 05m of daylight. Shortest: 9h 15m.
- 📏 At 38.8 square miles of land, 45812 is bigger than 52% of ZIP codes — room for about 29 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 2,027This ZIP2,027 |
|---|---|
| Households | 751This ZIP751 |
| Housing units | 836This ZIP836 |
| Median age | 36.1This ZIP36.1Ohio39.7US 38.9 |
| Median household income | $44,045This ZIP$44,045Ohio$71,389US $80,734 |
| Median home value | $137,100This ZIP$137,100Ohio$214,800US $332,700 |
| Median gross rent | $886This ZIP$886Ohio$1,034US $1,413 |
| Bachelor's degree or higher | 9.3%This ZIP9.3% |
| Mean commute | 23.8 minThis ZIP23.8 min |
| Population density | 52.2 / sq miThis ZIP52.2 / sq mi |
Business and tax activity
| Business establishments | 15This ZIP15 |
|---|---|
| Employees | 64This ZIP64 |
| Annual payroll | $3,326,000This ZIP$3,326,000 |
| Tax returns filed | 830This ZIP830 |
| Total adjusted gross income | $44,512,000This ZIP$44,512,000 |
Land area
| Land area | 38.82 sq miThis ZIP38.82 sq mi |
|---|---|
| Water area | 0.01 sq miThis ZIP0.01 sq mi |
Counties 45812 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Hardin County | 98.0% |
| Allen County | 2.0% |
Other place names in 45812
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 45812
| ZIP | City | Distance |
|---|---|---|
45859 | Mc Guffey, OH | 1.7 mi |
45850 | Harrod, OH | 5.7 mi |
45810 | Ada, OH | 7.1 mi |
43346 | Roundhead, OH | 7.4 mi |
45835 | Dola, OH | 7.8 mi |
45896 | Waynesfield, OH | 8.4 mi |
45854 | Lafayette, OH | 9.0 mi |
43310 | Belle Center, OH | 10.5 mi |
43326 | Kenton, OH | 10.8 mi |
45870 | New Hampshire, OH | 11.3 mi |
Find every ZIP code within 10 miles of 45812 →
Questions about this ZIP code
Where is ZIP code 45812?
45812 is in Alger, Ohio, in Hardin County. Its published point location is 40.6819, -83.8138.
What county is 45812 in?
45812 spans 2 counties: Hardin County and Allen County. Most of it falls in Hardin County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.
What area code is 45812?
Alger uses area codes 567 and 419, from NANPA's telephone records.
What time zone is 45812 in?
45812 uses America/New_York.
How many people live in 45812?
About 2,027 people live in ZIP code 45812, in 751 households, at 52.2 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What is the median household income in 45812?
$44,045 a year, against $71,389 across Ohio.
What ZIP codes are near 45812?
The closest are 45859 (1.7 mi), 45850 (5.7 mi), 45810 (7.1 mi), 43346 (7.4 mi) and 45835 (7.8 mi).
Is 45812 a PO Box ZIP code?
45812 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “45812 ZIP Code — Alger, Ohio (Hardin County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/45812
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/45812.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.