What city is 45320 in?

45320 is a Eaton, OH mailing address. By land area, 5% lies inside Eaton and 2% lies inside Lake Lakengren; the rest is outside any Census-defined city or community.

What is the population of 45320?

About 15,454 people (±424), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 15,530.

What is the median household income in 45320?

$64,903 (±$7,923), 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 45320?

11 USPS carrier routes with 6,710 residential and 392 business mailboxes (7,102 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 45320?

The closest, measured center to center: 45321 (7.9 mi, Eldorado), 45311 (8.5 mi, Camden), 45381 (8.5 mi, West Alexandria), 47324 (9.1 mi, Boston), 45338 (10.1 mi, Lewisburg) and 45347 (10.3 mi, New Paris).

45320 ZIP Code, Eaton, OH

45320 is a ZIP code in Eaton, Ohio in Preble County. It covers 134 square miles of land. The closest ZIP codes are 45321, 45311 and 45381. 15,454 people live here in 6,659 households. With about 115 people per square mile it is lightly settled, and most homes are owner-occupied (77%). Median household income is $64,903, close to the Ohio median of $71,389.

Quick facts

Mailing city: Eaton, OH
County: Preble County
Land area: 134 sq mi
Population: 15,454
Median household income: $64,903
Carrier routes: 11 (6,710 homes)

Key figures

Measure	Value
Residents	15,454
Households	6,659
Median household income	$64,903
Income per person	$34,703
Median age	44.1
Homeowners	77.1%
Median home value	$186,200
Median rent	$783
Bachelor's degree or higher	22.1%
Average commute (minutes)	24.2
Households with kids under 18	27.6%
Moved in the past year	6.9%
Below the poverty line	10.7%
Broadband internet	86.3%
Speak a non-English language at home	1.8%

Household income

% of households	Value
<$10K	3.9%
$10–15K	4.2%
$15–25K	9.6%
$25–35K	8.0%
$35–50K	13.0%
$50–75K	16.7%
$75–100K	14.9%
$100–150K	19.6%
$150–200K	7.4%
$200K+	2.8%

Age

% of all residents	Value
<10	13.1%
10–19	11.4%
20–24	3.3%
25–34	10.9%
35–44	12.9%
45–54	12.4%
55–64	14.4%
65–74	12.2%
75+	9.4%

Tenure

% of housing units	Value
Owned, with mortgage	45.6%
Owned outright	26.4%
Rented	21.2%
Vacant	6.9%

Type of building

% of housing units	Value
Detached house	86.4%
Townhome	1.9%
2–4 units	5.7%
5–19 units	3.5%
20+ units	1.6%
Mobile / other	1.0%

Businesses in 45320

326 business establishments with 6,477 employees (ZIP Codes Business Patterns 2023).

Health Care and Social Assistance: 59
Retail Trade: 52
Other Services (except Public Administration): 39
Construction: 32
Accommodation and Food Services: 30
Finance and Insurance: 24
Professional, Scientific, and Technical Services: 24
Manufacturing: 18

EDDM carrier routes

45320 has 11 USPS carrier routes with 6,710 residential and 392 business mailboxes. Open the EDDM route map.

Carrier routes in 45320

45320 has 11 USPS carrier routes (5 city (C), 6 rural (R)) with 6,710 residential and 392 business mailboxes. Routes range from 171 homes (C001) to 942 homes (C004); the median route has 642 homes. The Census counted 6,659 households in 45320 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

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

Best routes in 45320 for…

Most businesses

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

Route C001 — USPS business mailboxes 82, 171 homes
Route C005 — USPS business mailboxes 79, 711 homes
Route C002 — USPS business mailboxes 60, 558 homes
Route R001 — USPS business mailboxes 51, 549 homes
Route R002 — USPS business mailboxes 34, 529 homes

Select these 5 routes on the route map

Every carrier route in 45320

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C001	City	171	82	$69,303	—	—	—
C002	City	558	60	$65,812	—	—	—
C003	City	642	14	$69,303	—	—	—
C004	City	942	26	$73,987	—	—	—
C005	City	711	79	$75,000	—	—	—
R001	Rural	549	51	$75,000	—	—	—
R002	Rural	529	34	$57,199	—	—	—
R003	Rural	449	16	$106,472	—	—	—
R004	Rural	662	25	$65,812	—	—	—
R005	Rural	748	2	$86,926	—	—	—
R006	Rural	749	3	$106,472	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 45320 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

45321 — Eldorado village, OH (7.9 mi)
45311 — Camden village, OH (8.5 mi)
45381 — West Alexandria village, OH (8.5 mi)
47324 — Boston town, IN (9.1 mi)
45338 — Lewisburg village, OH (10.1 mi)
45347 — New Paris village, OH (10.3 mi)
45330 — Gratis village, OH (10.8 mi)
45382 — West Manchester village, OH (11.1 mi)

Areas that include 45320

Eaton, OH ZIP codes — 1 ZIP code
Lake Lakengren, OH ZIP codes — 1 ZIP code
Preble County ZIP codes — 12 ZIP codes
Ohio ZIP code data

Where it ranks

Mail every home in 45320

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.

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 45320, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 45320 in?: 45320 is a Eaton, OH mailing address. By land area, 5% lies inside Eaton and 2% lies inside Lake Lakengren; the rest is outside any Census-defined city or community.
What county is 45320 in?: 45320 is in Preble County.
What is the population of 45320?: About 15,454 people (±424), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 15,530.
What is the median household income in 45320?: $64,903 (±$7,923), 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 45320?: 11 USPS carrier routes with 6,710 residential and 392 business mailboxes (7,102 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 45320?: The closest, measured center to center: 45321 (7.9 mi, Eldorado), 45311 (8.5 mi, Camden), 45381 (8.5 mi, West Alexandria), 47324 (9.1 mi, Boston), 45338 (10.1 mi, Lewisburg) and 45347 (10.3 mi, New Paris).

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