What city is 45251 in?

45251 is a Cincinnati, OH mailing address. By land area, 20% lies inside Northgate, 17% lies inside Groesbeck, 11% lies inside Pleasant Run and 10% lies inside Northbrook; the rest is outside any Census-defined city or community.

What is the population of 45251?

About 20,254 people (±1,890), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 22,073.

What is the median household income in 45251?

$74,614 (±$5,603), compared with $71,389 for Ohio as a whole. Half the households in the ZIP code earn more and half earn less.

How many carrier routes and mailboxes are in 45251?

14 USPS carrier routes with 8,956 residential and 435 business mailboxes (9,393 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 45251?

The closest, measured center to center: 45252 (1.6 mi, Dunlap), 45231 (3.9 mi, New Burlington), 45240 (3.9 mi, Forest Park), 45218 (4.2 mi, Greenhills), 45014 (4.3 mi, Fairfield) and 45239 (5 mi, White Oak).

45251 ZIP Code, Cincinnati, OH

45251 is a ZIP code in Cincinnati, Ohio in Hamilton County. It covers 12 square miles of land. The closest ZIP codes are 45252, 45231 and 45240. 20,254 people live here in 7,843 households. At about 1,705 people per square mile it has suburban density, and most homes are owner-occupied (78%). Median household income is $74,614, close to the Ohio median of $71,389.

Quick facts

Mailing city: Cincinnati, OH
County: Hamilton County
Land area: 12 sq mi
Population: 20,254
Median household income: $74,614
Carrier routes: 14 (8,956 homes)

Key figures

Measure	Value
Residents	20,254
Households	7,843
Median household income	$74,614
Income per person	$35,971
Median age	39.1
Homeowners	77.9%
Median home value	$185,300
Median rent	$1,307
Bachelor's degree or higher	22.0%
Average commute (minutes)	24.7
Households with kids under 18	31.1%
Moved in the past year	7.7%
Below the poverty line	9.5%
Broadband internet	89.2%
Speak a non-English language at home	7.8%

Household income

% of households	Value
<$10K	4.6%
$10–15K	3.2%
$15–25K	4.1%
$25–35K	8.7%
$35–50K	13.0%
$50–75K	16.8%
$75–100K	18.1%
$100–150K	19.2%
$150–200K	6.8%
$200K+	5.7%

Age

% of all residents	Value
<10	13.8%
10–19	13.7%
20–24	4.3%
25–34	13.3%
35–44	12.2%
45–54	11.9%
55–64	14.5%
65–74	9.0%
75+	7.3%

Tenure

% of housing units	Value
Owned, with mortgage	52.0%
Owned outright	21.2%
Rented	20.2%
Vacant	6.7%

Type of building

% of housing units	Value
Detached house	74.3%
Townhome	4.9%
2–4 units	3.1%
5–19 units	11.4%
20+ units	4.2%
Mobile / other	2.0%

Businesses in 45251

397 business establishments with 8,727 employees (ZIP Codes Business Patterns 2023).

Retail Trade: 114
Accommodation and Food Services: 67
Health Care and Social Assistance: 38
Other Services (except Public Administration): 37
Administrative and Support and Waste Management and Remediation Services: 26
Construction: 23
Finance and Insurance: 18
Professional, Scientific, and Technical Services: 18

EDDM carrier routes

45251 has 14 USPS carrier routes with 8,956 residential and 435 business mailboxes. Open the EDDM route map.

Carrier routes in 45251

45251 has 14 USPS carrier routes (14 city (C)) with 8,956 residential and 435 business mailboxes. Routes range from 436 homes (C043) to 854 homes (C038); the median route has 636 homes. The Census counted 7,843 households in 45251 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	2
500–749	8
750–999	4
1,000–1,499	0
1,500+	0

Best routes in 45251 for…

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

Route C024 — USPS business mailboxes 141, 472 homes
Route C029 — USPS business mailboxes 77, 533 homes
Route C046 — USPS business mailboxes 67, 526 homes
Route C051 — USPS business mailboxes 44, 593 homes
Route C054 — USPS business mailboxes 39, 826 homes

Select these 5 routes on the route map

Every carrier route in 45251

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C024	City	472	141	$55,488	—	—	—
C027	City	614	0	$40,842	—	—	—
C029	City	533	77	$65,703	—	—	—
C035	City	677	13	$66,393	—	—	—
C038	City	854	14	$66,393	—	—	—
C042	City	736	20	$65,703	—	—	—
C043	City	436	5	$58,332	—	—	—
C046	City	526	67	$104,179	—	—	—
C048	City	658	6	$104,179	—	—	—
C049	City	514	1	$111,608	—	—	—
C051	City	593	44	$94,937	—	—	—
C054	City	826	39	$30,716	—	—	—
C058	City	765	1	$67,496	—	—	—
C066	City	752	7	$50,814	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 45251 on the EDDM route map.

How route demographics are estimated

Mailbox counts come from USPS; demographics are estimates

The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).

How a route gets its figures: the block-group length-share method

We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.

Margins of error

Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.

Different years

USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.

Why some routes show identical figures

Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.

Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Nearby ZIP codes

45252 — Dunlap CDP, OH (1.6 mi)
45231 — New Burlington CDP, OH (3.9 mi)
45240 — Forest Park city, OH (3.9 mi)
45218 — Greenhills village, OH (4.2 mi)
45014 — Fairfield city, OH (4.3 mi)
45239 — White Oak CDP, OH (5 mi)
45247 — Taylor Creek CDP, OH (5.2 mi)
45224 — Cincinnati city, OH (6.1 mi)

Areas that include 45251

Cincinnati, OH ZIP codes — 46 ZIP codes
Northbrook, OH ZIP codes — 2 ZIP codes
Groesbeck, OH ZIP codes — 3 ZIP codes
Northgate, OH ZIP codes — 1 ZIP code
Pleasant Run, OH ZIP codes — 2 ZIP codes
Dunlap, OH ZIP codes — 2 ZIP codes
Hamilton County ZIP codes — 55 ZIP codes
Ohio ZIP code data

Where it ranks

Mail every home in 45251

Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.

Cincinnati EDDM mailing

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 45251, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 45251 in?: 45251 is a Cincinnati, OH mailing address. By land area, 20% lies inside Northgate, 17% lies inside Groesbeck, 11% lies inside Pleasant Run and 10% lies inside Northbrook; the rest is outside any Census-defined city or community.
What county is 45251 in?: 45251 is in Hamilton County.
What is the population of 45251?: About 20,254 people (±1,890), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 22,073.
What is the median household income in 45251?: $74,614 (±$5,603), compared with $71,389 for Ohio as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 45251?: 14 USPS carrier routes with 8,956 residential and 435 business mailboxes (9,393 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 45251?: The closest, measured center to center: 45252 (1.6 mi, Dunlap), 45231 (3.9 mi, New Burlington), 45240 (3.9 mi, Forest Park), 45218 (4.2 mi, Greenhills), 45014 (4.3 mi, Fairfield) and 45239 (5 mi, White Oak).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.