1910 Census microfilms at Internet Archive

Reel 112. Adams, Arapahoe, Archuleta, Baca, Bent, Chaffee, Cheyenne, and Clear Creek Counties.
Reel 113. Boulder, Conejos, Costilla, and Custer Counties.
Reel 114. Delta, Dolores, Douglas, Eagle, and Denver (EDs 47-74) Counties.
Reel 115. Denver (EDs 75-105, 141-150) County.
Reel 116. Denver (EDs 106-140, 151-162) County.
Reel 117. Denver (EDs 163-183, 197-206) County.
Reel 118. Denver (EDs 184-196) and El Paso (EDs 17-37, 200) Counties.
Reel 119. El Paso (EDs 38-59), Elbert, and Fremont Counties.
Reel 120. Garfield, Gilpin, Grand, Gunnison, Hinsdale, Huerfano, Jackson, Jefferson, Kiowa, and Kit Carson Counties.
Reel 121. La Plata, Lake, Larimer, and Las Animas (EDs 95-105) Counties.
Reel 122. Las Animas (EDs 106-120, 199), Lincoln, Logan, Mineral, and Mesa Counties.
Reel 123. Montezuma, Montrose, Morgan, Otero, Ouray, Park, and Prowers Counties.
Reel 124. Phillips, Pitkin, Yuma, and Pueblo Counties.
Reel 126. Weld County.