Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — ZIP/45204

45204

ZIP 45204 is in Cincinnati, Ohio, in Hamilton County; area codes 513 and 283; Eastern time. Cincinnati has 71 ZIP codes in all.

Type
Standard
Time zone
America/New_York
County
Hamilton
Population
8,412
Coordinates
39.0896, -84.5781
☼ Live from 45204 — Cincinnati, OH

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 45204 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.

★ Weird and wonderful facts about 45204
  • 🔢 Type 45204 into a pocket calculator and turn it upside down: hOZSh — not quite a word, sorry.
  • ➕ As a number, 45,204 = 2 × 2 × 3 × 3767. Its digits add up to 15, a total 1,657 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1011000010010100
  • 🏠 Its numerical neighbours: 45203 (Cincinnati, OH, 3 mi away) and 45205 (Cincinnati, OH, 1 mi away).
  • 🔄 Backwards, 45204 becomes 40254, which is not a ZIP code at all.
  • 👥 34 other ZIP codes are made of exactly the same digits (02445, 02454, 04254, 05442, 20544, 24054, …). The farthest-flung twin is 04254 in Livermore Falls, ME, 829 miles away.
  • 🧭 Farther south than 50% of all ZIP codes, and farther east than 58%.
  • 🎯748 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 45204 and you would come out at 39.09°S, 95.42°E — 1,247 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 55m of daylight. Shortest: 9h 25m.
  • 📏 At 3.1 square miles of land, 45204 is bigger than 14% of ZIP codes — room for about 2.3 Central Parks.
🌙 The sky over 45204 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population8,412This ZIP8,412
Households3,014This ZIP3,014
Housing units3,625This ZIP3,625
Median age27.6This ZIP27.6Ohio39.7US 38.9
Median household income$31,236This ZIP$31,236Ohio$71,389US $80,734
Median home value$95,400This ZIP$95,400Ohio$214,800US $332,700
Median gross rent$932This ZIP$932Ohio$1,034US $1,413
Bachelor's degree or higher17.5%This ZIP17.5%
Mean commute25.5 minThis ZIP25.5 min
Population density2,735.6 / sq miThis ZIP2,735.6 / sq mi

Business and tax activity

Business establishments94This ZIP94
Employees2,477This ZIP2,477
Annual payroll$175,625,000This ZIP$175,625,000
Tax returns filed2,250This ZIP2,250
Total adjusted gross income$96,005,000This ZIP$96,005,000

Land area

Land area3.08 sq miThis ZIP3.08 sq mi
Water area0.28 sq miThis ZIP0.28 sq mi

Other place names in 45204

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 45204

ZIPCityDistance
45205 Cincinnati, OH 1.5 mi
41016 Covington, KY 1.6 mi
45238 Cincinnati, OH 2.1 mi
45203 Cincinnati, OH 2.6 mi
41011 Covington, KY 2.9 mi
45214 Cincinnati, OH 2.9 mi
41025 Erlanger, KY 3.5 mi
45225 Cincinnati, OH 3.9 mi
45202 Cincinnati, OH 4.1 mi
45051 Mount Saint Joseph, OH 4.2 mi

Find every ZIP code within 10 miles of 45204 →

Questions about this ZIP code

Where is ZIP code 45204?

45204 is in Cincinnati, Ohio, in Hamilton County, part of the Cincinnati, OH-KY-IN metropolitan area. Its published point location is 39.0896, -84.5781.

What county is 45204 in?

45204 lies in Hamilton County.

What area code is 45204?

Cincinnati uses area codes 513 and 283, from NANPA's telephone records.

What time zone is 45204 in?

45204 uses America/New_York.

How many people live in 45204?

About 8,412 people live in ZIP code 45204, in 3,014 households, at 2,735.6 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 45204?

$31,236 a year, against $71,389 across Ohio.

What ZIP codes are near 45204?

The closest are 45205 (1.5 mi), 41016 (1.6 mi), 45238 (2.1 mi), 45203 (2.6 mi) and 41011 (2.9 mi).

Is 45204 a PO Box ZIP code?

45204 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “45204 ZIP Code — Cincinnati, Ohio (Hamilton County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/45204

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/45204.json

Underlying data is public domain or openly licensed — sources, vintages and licences.