The following are links to North Carolina counties for the 1870 Federal Census. Thanks to the Internet Archive, these are free to access online, and you can also download them as PDF files.

• Volume Reel 1121 – Alamance, Alexander, and Alleghany Counties
• Volume Reel 1122 – Anson and Ashe Counties
• Volume Reel 1123 – Beaufort and Bertie Counties
• Volume Reel 1124 – Bladen County
• Volume Reel 1125 – Brunswick and Buncombe Counties
• Volume Reel 1126 – Burke and Cabarrus Counties
• Volume Reel 1127 – Caldwell, Camden, and Carteret Counties
• Volume Reel 1128 – Caswell and Catawba Counties
• Volume Reel 1129 – Chatham County
• Volume Reel 1130 – Cherokee, Chowan, and Clay Counties
• Volume Reel 1131 – Cleveland and Columbus Counties
• Volume Reel 1132 – Craven County
• Volume Reel 1133 – Cumberland, Currituck, and Dare Counties
• Volume Reel 1134 – Davidson County
• Volume Reel 1135 – Davie and Duplin Counties
• Volume Reel 1136 – Edgecombe County
• Volume Reel 1137 – Forsyth and Franklin Counties
• Volume Reel 1138 – Gaston County
• Volume Reel 1139 – Gates and Granville Counties
• Volume Reel 1140 – Greene and Guilford Counties
• Volume Reel 1141 – Halifax County
• Volume Reel 1142 – Harnett and Haywood Counties
• Volume Reel 1143 – Henderson, Hertford, and Hyde Counties
• Volume Reel 1144 – Iredell and Jackson Counties
• Volume Reel 1145 – Johnston and Jones Counties
• Volume Reel 1146 – Lenoir, Lincoln, and Macon Counties
• Volume Reel 1147 – Madison, Martin, and McDowell Counties
• Volume Reel 1148 – Mecklenburg County
• Volume Reel 1149 – Mitchell, Montgomery, and Moore Counties
• Volume Reel 1150 – Nash County
• Volume Reel 1151 – New Hanover County
• Volume Reel 1152 – Northampton County
• Volume Reel 1153 – Onslow and Orange Counties
• Volume Reel 1154 – Pasquotank, Perquimans, and Person Counties
• Volume Reel 1155 – Pitt and Polk Counties
• Volume Reel 1156 – Randolph and Richmond Counties
• Volume Reel 1157 – Robeson and Rockingham Counties
• Volume Reel 1158 – Rowan County
• Volume Reel 1159 – Rutherford and Sampson Counties
• Volume Reel 1160 – Stanly and Stokes Counties
• Volume Reel 1161 – Surry, Transylvania,Tyrell, and Union Counties
• Volume Reel 1162 – Wake County (part 1)
• Volume Reel 1163 – Wake County (part 2)
• Volume Reel 1164 – Warren, Washington, and Watauga Counties
• Volume Reel 1165 – Wayne and Wilkes Counties
• Volume Reel 1166 – Wilson,Yadkin, and Yancy Counties

There are many other years available. Visit the Internet Archives U.S. Census collection to see more.