43512 ZIP Code, Defiance, OH

43512 is a ZIP code in Defiance, Ohio — mostly in Defiance County (93% of its land), with smaller parts in Paulding and Henry counties. It covers 218 square miles of land. The closest ZIP codes are 43530, 43519 and 43549. 28,022 people live here in 11,706 households. With about 129 people per square mile it is lightly settled, and most homes are owner-occupied (77%). Median household income is $71,841, close to the Ohio median of $71,389.

Quick facts

Key figures

MeasureValue
Residents28,022
Households11,706
Median household income$71,841
Income per person$37,225
Median age44
Homeowners77.4%
Median home value$158,800
Median rent$860
Bachelor's degree or higher19.2%
Average commute (minutes)19.6
Households with kids under 1825.4%
Moved in the past year9.0%
Below the poverty line11.9%
Broadband internet87.9%
Speak a non-English language at home5.0%

Household income

% of householdsValue
<$10K3.6%
$10–15K3.7%
$15–25K7.2%
$25–35K7.3%
$35–50K12.5%
$50–75K17.6%
$75–100K15.8%
$100–150K18.9%
$150–200K9.7%
$200K+3.7%

Age

% of all residentsValue
<1010.6%
10–1911.9%
20–245.3%
25–3411.9%
35–4412.1%
45–5412.2%
55–6413.8%
65–7413.4%
75+8.9%

Tenure

% of housing unitsValue
Owned, with mortgage40.7%
Owned outright31.5%
Rented20.4%
Vacant7.4%

Type of building

% of housing unitsValue
Detached house76.9%
Townhome2.8%
2–4 units7.2%
5–19 units3.8%
20+ units3.6%
Mobile / other5.6%

Businesses in 43512

642 business establishments with 11,773 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

43512 has 22 USPS carrier routes with 12,133 residential and 777 business mailboxes. Open the EDDM route map.

Carrier routes in 43512

43512 has 22 USPS carrier routes (12 city (C), 10 rural (R)) with 12,133 residential and 777 business mailboxes. Routes range from 323 homes (C011) to 921 homes (C009); the median route has 531 homes. The Census counted 11,706 households in 43512 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2490
250–4998
500–74910
750–9994
1,000–1,4990
1,500+0

Best routes in 43512 for…

Most businesses

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

  1. Route C011 — USPS business mailboxes 165, 323 homes
  2. Route C010 — USPS business mailboxes 103, 584 homes
  3. Route C001 — USPS business mailboxes 97, 447 homes
  4. Route C013 — USPS business mailboxes 67, 518 homes
  5. Route R003 — USPS business mailboxes 51, 377 homes

Select these 5 routes on the route map

Every carrier route in 43512

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C001City44797$41,065———
C003City53036$64,322———
C004City41815$84,188———
C005City65917$74,413———
C006City77021$39,241———
C007City36512$52,438———
C009City9217$59,623———
C010City584103$85,686———
C011City323165$64,322———
C012City79224$75,344———
C013City51867$70,027———
C014City80341$50,000———
R001Rural5319$80,233———
R002Rural54720$94,131———
R003Rural37751$104,661———
R004Rural56914$80,233———
R005Rural49022$59,623———
R006Rural44914$77,009———
R007Rural3949$59,247———
R008Rural5098$67,429———
R009Rural60315$80,233———
R010Rural53410$77,009———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 43512 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

Areas that include 43512

Where it ranks

Mail every home in 43512

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) 43512, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 43512 in?
43512 is a Defiance, OH mailing address. By land area, 6% lies inside Defiance; the rest is outside any Census-defined city or community.
What county is 43512 in?
43512 is mostly in Defiance County (93% of its land), with smaller parts in Paulding and Henry counties.
What is the population of 43512?
About 28,022 people (±754), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 28,208.
What is the median household income in 43512?
$71,841 (±$4,038), 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 43512?
22 USPS carrier routes with 12,133 residential and 777 business mailboxes (12,910 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 43512?
The closest, measured center to center: 43530 (4 mi), 43519 (8.4 mi), 43549 (10.1 mi, Ney), 43555 (10.7 mi, Ridgeville Corners), 43556 (10.7 mi, Sherwood) and 43527 (11.2 mi, Holgate).

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