Opportunity Zones use census tracts
A ZIP code can include multiple census tracts, and a census tract can cross parts of more than one ZIP code. That is why ZIP research should lead to census tract confirmation.
After the ZIP search
How to Use ZIP Codes for Opportunity Zone Map Research
ZIP codes can narrow a research area, but Opportunity Zone status is based on census tracts. Use this page as a starting point, then confirm tract status with official sources.
ZIP codes are not legal QOZ boundaries; census tract is the confirmation unit. Use ZIP as a starting clue, then run an address lookup or compare a known tract GEOID with official source data.
Research path
Research path for ZIP
ZIP results are research starting points. Continue to address or census tract confirmation before relying on QOZ status.
- Use the ZIP code to narrow the city or local search area.
- Use the address lookup on this page, the Census Geocoder, or another official source path to identify the census tract for a specific address.
- Match that census tract against CDFI, HUD, Treasury, IRS, or state source materials.
- Review the data sources and relevant state pages before using the result in professional research.
ZCTA context
ZIP/ZCTA map context
ZIP context is not yet available for this ZIP. Use the general research path and address lookup below.
- ZCTA
- Available after a covered ZIP search.
- County context
- Available after a covered ZIP search.
- Map context
- Use ZIP/ZCTA context to orient the map, then confirm by tract.
- Source
- U.S. Census Bureau 2023 Gazetteer and 2020 ZCTA to County Relationship File.
OZ 1.0 source evidence
Candidate census tracts
Candidate tracts for research appear after a covered ZIP search. They are not a property-level conclusion.
- Use address lookup below to identify the census tract for a specific property.
ZIP entry needs review
Enter a 5-digit ZIP code
Enter a 5-digit ZIP code to start Opportunity Zone map research. ZIP codes narrow the map area; they do not determine QOZ status.
Address research result
Address to census tract research result
- Matched address
- Result appears after lookup.
- Census tract GEOID
- Result appears after lookup.
- OZ 1.0 designated status
- Result appears after lookup.
- Source
- CDFI Fund designated QOZ spreadsheet, source date 2018-12-14.
This is a research result based on Census Geocoder tract matching and CDFI Fund OZ 1.0 source data.
Why ZIP code is only a starting point
People often search for an Opportunity Zone map by ZIP code because ZIPs are familiar. The legal and data workflow is different: the durable check is census tract based.
Use official source paths
The next step is to identify a census tract and compare it with agency source materials. Start with the data source page for links and local downloaded source references.
Understand the limits
This site is an Independent Research Resource. It does not decide tax treatment, legal status, investment outcomes, or property-level claims.
What a useful ZIP research note should include
Field Why it matters
ZIP code Narrows the starting geography but does not prove QOZ status.
Address or parcel Needed before a tract lookup can be specific.
Census tract The unit to compare with official designated tract sources.
Source and date Keeps research traceable as OZ 1.0 and newer nomination materials evolve.
Useful next pages
Browse state pages
State pages collect map resource entry points and source references.
California tract example
Use the California page for a state-level map and Los Angeles local preview.
Read the guide
Learn how Qualified Opportunity Zone map research fits with census tract source data.
ZIP code Opportunity Zone FAQ
Is an Opportunity Zone determined by ZIP code?
No. ZIP codes are postal areas, while Qualified Opportunity Zone status is tied to census tracts. A ZIP code can include multiple tracts, so a ZIP result should be treated as a research starting point.
What should I do after entering a ZIP code?
Use the ZIP code to narrow the local area, identify the census tract for a specific address, then compare that tract with official CDFI Fund, HUD, Treasury, IRS, Census Bureau, or state sources.
Why does this page not return a final yes or no answer?
A property-specific answer requires tract-level matching and source review. This first-version page intentionally avoids making unsupported tax, legal, or investment conclusions.