Plain

County ZIP codes · Ohio · FIPS 39123

Ottawa County, OH ZIP Codes

Ottawa County, Ohio has 19 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 15 of the residential ones lie mainly in Ottawa County and 4 mainly in a neighboring county; 8 cross the county line. Median household income ranges from $67,490 in 43452 (Port Clinton) to $152,411 in 43432 (Graytown) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Ottawa County?

43408 · Clay Center: $62k43412 · Curtice: $108k43416 · Elmore: $89k43430 · Genoa: $74k43432 · Graytown: $152k43433 · Gypsum: –43436 · Isle Saint George: –43439 · Lacarne: –43440 · Lakeside Marblehead: $75k43442 · Lindsey: $62k43445 · Martin: $83k43446 · Middle Bass: –43447 · Millbury: $90k43449 · Oak Harbor: $71k43452 · Port Clinton: $68k43456 · Put In Bay: $73k43458 · Rocky Ridge: $79k43468 · Williston: $131k43469 · Woodville: $86k4344943452434124344543416434304343243469434404344743442434564344643408 · Clay Center: $62k43412 · Curtice: $108k43416 · Elmore: $89k43430 · Genoa: $74k43432 · Graytown: $152k43433 · Gypsum: –43436 · Isle Saint George: –43439 · Lacarne: –43440 · Lakeside Marblehead: $75k43442 · Lindsey: $62k43445 · Martin: $83k43446 · Middle Bass: –43447 · Millbury: $90k43449 · Oak Harbor: $71k43452 · Port Clinton: $68k43456 · Put In Bay: $73k43458 · Rocky Ridge: $79k43468 · Williston: $131k43469 · Woodville: $86k43449434524341243445434164343043432434694344043447434424345643408 · Clay Center: $62k43412 · Curtice: $108k43416 · Elmore: $89k43430 · Genoa: $74k43432 · Graytown: $152k43433 · Gypsum: –43436 · Isle Saint George: –43439 · Lacarne: –43440 · Lakeside Marblehead: $75k43442 · Lindsey: $62k43445 · Martin: $83k43446 · Middle Bass: –43447 · Millbury: $90k43449 · Oak Harbor: $71k43452 · Port Clinton: $68k43456 · Put In Bay: $73k43458 · Rocky Ridge: $79k43468 · Williston: $131k43469 · Woodville: $86k434494345243412434454341643430434404344743442
The residential ZIP codes of Ottawa County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $71,083 and $89,643.

They carry 19 postal town names.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 19 residential ZIP codes in Ottawa County

15 ZIP codes lie mainly in Ottawa County; 4 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Ottawa County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
43452 Port Clinton 14,264 309 $68k $222k 100%
43449 Oak Harbor 7,572 90 $71k $181k 98%
43430 Genoa 4,911 192 $74k $157k 79%
43440 Lakeside Marblehead 4,222 266 $75k $297k 100%
43416 Elmore 2,868 102 $89k $197k 86%
43432 Graytown 1,357 62 $152k $245k 100%
43445 Martin 801 39 $83k $193k 83%
43456 Put In Bay 692 273 $73k $589k 100%
43468 Williston 459 279 $131k $206k 100%
43408 Clay Center 386 587 $62k $118k 100%
43458 Rocky Ridge 282 284 $79k $97k 100%
43446 Middle Bass 35 28 – – 100%
43433 Gypsum no residents 0 – – 100%
43436 Isle Saint George no residents 0 – – 100%
43439 Lacarne no residents 0 – – 100%

Partly in Ottawa County

Residential ZIP codes mainly in another county that reach at least 1% into Ottawa County, by their share here
In this county
43412 Curtice 4,175 151 $108k $229k 40%
43447 Millbury 3,348 193 $90k $219k 30%
43469 Woodville 2,905 127 $86k $206k 8%
43442 Lindsey 824 47 $62k $173k 4%

Download the 19 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

8 ZIP codes of Ottawa County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Ottawa County and in the neighboring counties
ZIPIn OttawaElsewhere
4344998%Sandusky County 2%
4343079%Wood County 13%; Sandusky County 7%
4341240%Lucas County 60%
4344730%Wood County 70%
434698%Sandusky County 92%
4341686%Sandusky County 14%
434424%Sandusky County 96%
4344583%Lucas County 17%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

Which first three digits do Ottawa County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Ottawa County starts with 434.

Three-digit prefixes of Ottawa County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Ottawa County's
PrefixSectional centerHereAll codes
434 Toledo, OH (SCF 434) 19 45

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.