400 E Jefferson in Detroit is not a designated Opportunity Zone

On November 10, 2026, the Census Bureau geocoder returned one match for 400 East Jefferson Avenue, Detroit, Michigan 48207. The matched address is 400 E JEFFERSON AVE, DETROIT, MI, 48207. The match sits on the address range from 400 to 498 East Jefferson Avenue, at longitude -83.0407475737 and latitude 42.330055731421. The Census Tracts layer names Census Tract 5172, GEOID 26163517200, in Wayne County, state 26, county 163. The benchmark was Public_AR_Current and the vintage was Current_Current. That GEOID is the tract this address check uses. It is the Census Bureau’s address-range match, not a survey of a building footprint.

The tract is not designated. GEOID 26163517200 does not appear in the CDFI Fund final designations workbook, sheet final_oz2_designations. The workbook was downloaded again on November 10, 2026. Its SHA-256 is c04f6cdf0db717c21bb03aa46b655a5f016b3a7b0477e2ed8799ce8bfb4b5efd. The sheet has 6,576 data rows, and the Rural QOZ column marks 2,594 of them Rural. Treasury press release sb0682, dated November 5, 2026, says all 6,576 tracts were designated Qualified Opportunity Zones effective January 1, 2027, of which 2,594 are in rural areas. The same workbook has 65 Wayne County, Michigan rows. Every one of those 65 is marked Non-Rural. GEOID 26163517300 is one of them, with QOZID N26163517300-27. GEOID 26163517200 is not a row. The state name is part of the filter: the workbook also contains a Wayne County in other states, and those rows are not this Detroit check.

Why a 2018 zone is not a 2027 answer. 400 East Jefferson Avenue is in a tract that was on the older Opportunity Zone list and is not on the list that takes effect January 1, 2027. A reader who stops at “downtown Detroit,” at ZIP code 48207, or at Wayne County’s count of 65 will get a different question from the one the federal file answers. County membership is not an address result. The two tract pages are 26163517200 and 26163517300. The state page is Michigan Opportunity Zones. The map and the tract lookup read the same CDFI workbook. This article is the address check. It does not recap a regional roundup.

What the 2018 spreadsheet says. The CDFI Fund spreadsheet updated December 14, 2018 says it reflects that round’s final Qualified Opportunity Zone designations. Both of these Wayne County, Michigan GEOIDs are on it. Tract 26163517200 is listed with Tract Type Low-Income Community. Tract 26163517300 is listed with the same Tract Type, Low-Income Community. The data-source column on both rows reads 2011-2015. So the address that fails the 2027 test was inside a 2018 zone, and the designated contrast tract was inside a 2018 zone as well. The older file does not use the QOZID style of the 2027 workbook, and it does not mark a Rural QOZ column. Reading the 2018 row as if it were the January 1, 2027 row is the mistake this address makes easy.

The two lists answer different questions. A row on the December 14, 2018 spreadsheet does not add 26163517200 to the workbook that takes effect January 1, 2027. Tract 26163517300 is on both files: Low-Income Community in 2018, and Non-Rural with QOZID N26163517300-27 on the final workbook. Tract 26163517200 is on the 2018 spreadsheet only. Someone who remembers East Jefferson as inside an older zone still has to run the 2027 test. For 400 East Jefferson Avenue, that test is no. This article does not say the two tracts share a border. The geocoder placed the address in 26163517200. It did not measure a shared line with 26163517300. The designated fact for 26163517300 stands on its own workbook row.

How to check the next Detroit address. Use the Census Bureau geocoder, copy the 11-digit GEOID from the current match, and compare it with the CDFI Fund workbook. Then open the same GEOID on the tract lookup or the map. A ZIP code, a city name, or a memory of the 2018 map does not make the address designated. For the Wayne County tract that is designated in this pair, start with 26163517300. For the tract that is not, the page is 26163517200. Both take their 2027 answer from the final workbook. The county table is the Wayne County tract list. Statewide context stays on the Michigan page.

What this check is not. “Not designated” means GEOID 26163517200 is absent from the final workbook. It does not describe a project, a permit, a landlord, or a financing result at 400 East Jefferson Avenue. “Designated” for GEOID 26163517300 does not mean a project in that tract has been selected, and it does not predict a return. This page does not give tax advice. The fact it supports is the address fact: the November 10 geocoder match for 400 East Jefferson Avenue is tract 5172, that tract was on the 2018 list, and that tract is not designated for January 1, 2027.