Apartment unit directory

Find Apartment Unit Numbers by Address

Browse available state and city records, choose a property address, and review the unit identifiers listed for that location. Coverage varies, so confirm important details with the property or another authoritative source.

Browse available states Read address guides
No sign-in required Property details, not resident names Expanding location coverage
Simple browse path

How to look up a unit number

Start with a location, narrow the directory to a property, then review the available record.

Choose an available state

Use the state directory below. Only states with browsable city records are linked.

Select a city and address

Open the city that matches the location, then choose the specific property address.

Review and confirm the units

Check the listed identifiers and independently confirm any detail used for mail, delivery, access, or official records.

Location directory

Browse Available States

Choose a state to see its available cities and property records. States without usable city coverage are not shown.

20 available states

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Know what the directory can—and cannot—confirm

UnitChecker provides property-address and unit-identifier records when available. It does not show resident names, rental availability, access instructions, or proof that a unit is currently occupied or deliverable. Buildings may also rename or renumber units. Verify important details with the property manager, recipient, carrier, or applicable public authority.

Common questions

Apartment unit lookup FAQ

UnitChecker displays available property addresses and the unit identifiers associated with those records. It is a directory, not a tenant, vacancy, rental-price, or building-access service.

Choose an available state, open the matching city, and select the property address. If a unit record exists, the address page lists the identifiers currently stored for that property.

Coverage depends on the records available to UnitChecker and is still expanding. A location may be absent, incomplete, newly constructed, or stored under a different address format.

Use the directory as a starting point, not as proof of postal deliverability. Confirm the complete address with the recipient or property and follow the current addressing requirements of the carrier you plan to use.

Send the property address and a clear description of the issue through the contact page. Do not include a resident's private information.

Found a missing or incorrect property record?

Tell us which address needs review and what appears to be wrong. Please share property details only—never a resident's private information.

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