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Colorado · HUD 2027 designations

Colorado 2027 QCTs and DDAs by county

HUD's 2027 list puts 217 Colorado census tracts, home to 845,007 people in the 2020 Census, in qualified census tracts, across 29 counties; Denver County (43), Adams County (33), Arapahoe County (29) have the most. 11 nonmetropolitan counties are difficult development areas. 28 ZIP code areas (ZCTAs) are Small Area DDAs. A building in a QCT or DDA can take 130% of eligible basis. The lists apply to allocations and bond issues after December 31, 2026.

2172027 qualified census tracts
845,007people in them (2020 Census)
11nonmetro DDA counties
28Small Area DDA ZIP codes

Qualified census tracts by county

Click a column to sort. Each county opens its full tract list.
County2027 QCTsPopulation in QCTsMonitored LIHTC properties in QCTs
Adams County33161,65131
Arapahoe County29122,89128
Baca County23,5060
Bent County13,5691
Boulder County1562,16119
Clear Creek County12,6440
Costilla County23,4990
Crowley County12,9060
Delta County12,2810
Denver County43177,64368
El Paso County2076,7798
Huerfano County13,2481
Jackson County11,3790
Jefferson County725,8597
Larimer County1246,58412
Las Animas County13,7591
Logan County27,2813
Mesa County314,2494
Montezuma County25,5146
Montrose County23,3535
Otero County27,5520
Park County12,4830
Prowers County11,4060
Pueblo County1533,47315
Rio Grande County26,8502
Routt County13,9601
Summit County24,3162
Teller County13,2970
Weld County1350,9148

Sources: HUD 2027 QCT data file (qct_data_2027.xlsx), checked tract by tract against HUD's QCT2027.csv; population from the 2020 Census columns in that file. Properties: HUD's LIHTC database (LIHTCPUB, revised May 28, 2026), monitored properties by 2020 tract.

Nonmetropolitan DDA counties

Every site in these counties is in a 2027 difficult development area: Archuleta County, Chaffee County, Crowley County, Eagle County, Garfield County, La Plata County, Mineral County, Ouray County, Pitkin County, Routt County, Summit County.

Small Area DDA ZIP codes

In metro areas HUD designates DDAs by ZIP Code Tabulation Area. A ZCTA follows ZIP code boundaries closely but not exactly, so check a specific address with the lookup.

Metro area2027 Small Area DDA ZCTAs
Boulder, CO MSA80516
Colorado Springs, CO HUD Metro FMR Area80132, 80831, 80840, 80902, 80920, 80921, 80922, 80923, 80924, 80925, 80927, 80929, 80930, 80938, 80951
Denver-Aurora-Centennial, CO MSA80007, 80018, 80125, 80126, 80130, 80202, 80290, 80433, 80602
Fort Collins-Loveland, CO MSA80549
Greeley, CO MSA80530
Pueblo, CO MSA80817

Changes from the 2026 lists

Compared with HUD's 2026 lists, Colorado gains 27 qualified census tracts and loses 34; 1 Small Area DDA ZIP codes are new and 4 dropped off; 2 nonmetro DDA counties are new and 1 dropped off. A site that dropped off keeps its status for an application filed before 2027 and allocated within 730 days. Every state's changes.

CountyTracts new for 2027Tracts dropped since 2026
Denver County31.02, 36.02, 40.05, 41.02, 51.04, 68.10, 68.139.02, 13.02, 18, 119.02
El Paso County20, 45.01, 67.017, 45.13, 63.02
Adams County85.55, 93.0780, 86.06
Arapahoe County77.03, 77.04, 82176
Jefferson County116.01, 159114.02, 115.52
Weld County11, 14.136, 7.03
Fremont County9784, 9786, 9790.02
Pueblo County3, 222
Alamosa County9602.01, 9603
Conejos County9748, 9749
Mesa County6.01, 11.04
Prowers County2, 7
Bent County9667.01
Boulder County122.01
Crowley County9696.02
Delta County9648
Gunnison County9637.02
Larimer County10.03
Las Animas County3
Montezuma County9411
Montrose County9663.01
Otero County9680
Rio Grande County9767
Routt County4
Summit County2.02
Teller County102.03

Nonmetro DDA counties new for 2027: Archuleta County, Chaffee County.

Nonmetro DDA counties dropped: San Miguel County.

Small Area DDA ZIP codes new for 2027: 80433.

Small Area DDA ZIP codes dropped: 80129, 80249, 80465, 80913.

Computed by us from HUD's 2026 and 2027 files; 2026 notice: FR Doc. 2025-19007.

Designations: HUD 2027 QCT and DDA designations, FR Doc. 2026-20390 (91 FR 63573, Oct. 6, 2026).

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