How many bathrooms Central Ohio houses have, ZIP code by ZIP code

Whether a one-bathroom house is unusual depends on where it is and when it was built. This page counts the full and half bathrooms that county auditors record for Central Ohio's single-family houses, by the age of the house and ZIP code by ZIP code in Franklin County, with Delaware, Fairfield and Union counties beside it, from the counties' own map services as they counted them in September 2026. ZIP codes are shown for Franklin County only; Licking, Madison and Pickaway publish no count.

Last updated September 2026 · Counts are the county auditors' appraisal records, totaled by each county's parcel map service on September 25, 2026 · No prices on this page; the Estimate Builder carries those · Part of the knowledge base

Where the count comes from

The census stopped counting bathrooms after 1980, as the page on bathrooms per house by decade sets out, but county auditors still record the full and half bathrooms of every house for tax appraisal. The Franklin County Auditor's parcel map service holds those fields, labeled "FIXTURES BATH (FULL BATHS)" and "FIXTURES HALF (HALF BATHS)" in the auditor's own list of field names, with the year built and the site ZIP code, and it counts them itself on request, so the figures below are totals the service computed on September 25, 2026 and no record about any owner was read. The universe is single-family houses, classes 510 to 515, with a recorded year built: 297,066 houses. Each is one parcel's record; a parcel with a second house on it counts once. Condominiums, two- and three-family houses and mobile homes are not in it.

These are appraisal records, not inspections. A bath added in a remodel shows up only if the auditor learned of it, and a removed one can linger. No county read for this page defines what physically makes a half bath, and this page does not supply a definition of its own. A blank half-bath field is read here as none, which reproduces the figure the county's bulk file gives.

By the age of the house

Year built piles up on round numbers in the record: Franklin County has 7,654 houses recorded at exactly 1900, against 60 at 1899, and 1920, 1925 and 1950 are heaped too, which is what estimated years look like. So the years before 1950 are shown here as one band. In that band, about half of Franklin County's houses record one full bath and no half bath; among houses built since 2000, almost none do.

ZIP code by ZIP code

The table gives the Franklin County part of each ZIP code, ordered by the share of houses with one full bath. The ZIP code is the house's postal ZIP as the auditor records it, not the Census ZIP code areas used on the page on when houses were built by ZIP code, so the two are close but not identical. Only the ZIP codes on that page are shown, which leaves out most of the city of Columbus's own ZIP codes; together those shown hold about 61 percent of the county's houses. The last column is the share with one full bath among each ZIP code's houses built before 1950.

Counting every Franklin County ZIP code with at least 500 houses, most houses record one full bath in 16, led by 43211 at 90 percent, most of them Columbus ZIP codes not in the table; in 43206, the south side around German Village, it is 67 percent, and about 43 percent record one full bath and no half bath. The last column shows how differently old houses have fared: of houses built before 1950, 17.9 percent in 43221 still record one full bath, against 74.9 percent in 43123 and 85.3 percent in 43228. That contrast is a reading of the record, which says how many baths a house has, not when or why any were added.

Four counties side by side

Delaware, Fairfield and Union counties publish bath fields in public map services that also count on request; Licking, Madison and Pickaway publish none in such a service. Each county names and fills its fields its own way, so the counties are shown side by side and never added together. Across all four, about half of the houses built in the 1960s record one full bath, and 67 to 72 percent of those built in the 1950s. Union's layer lists about 1 percent of its parcels more than once.

Scope, plainly. The figures are each county's appraisal record as its map service counted it on one day, and they describe houses in general, not any one house. What bathrooms looked like in each era is on the page on bathroom styles and fixtures by era.

Sources

Every figure, date and quotation on this page comes from one of these documents, read on the date given. Where two of them disagree, the page says so.

• Franklin County Auditor, Parcel Features map service, Tax Parcel layer, fields BATHS, HBATHS, RESYRBLT, CLASSCD and ZIPCD, totals computed by the service; counted September 25, 2026.
• Franklin County Auditor, Appraisal Outside User File, label names; read September 25, 2026.
• Delaware County parcel map service, Fairfield County parcel boundaries map service and Union County parcel and building information map service, bath and year-built fields, totals computed by each service; counted September 25, 2026.

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