| Radmacher | Jacob | Monmouth City | brick maker | dem | Meth | from Germany |
| Raines | Harvey | Monmouth City | laborer | rep | Meth | from Missouri |
| Ramsey | Mrs. Martha | Monmouth City | widow | _ | U.P. | from Ohio |
| Ramsey | W.T. | Monmouth City | carpenter | rep | U.P. | from O. |
| Randall | Mrs. D.A. | Monmouth City | widow | _ | _ | from New York |
| Randall | E.A. | Monmouth City | baker | rep | _ | born Illinois |
| Randall | Mrs. | Monmouth City | widow | _ | Cath | from Ireland |
| Rankin | George C. | Monmouth City | local editor Monmouth Atlas; born in Warren County, Illinois, Aug. 29, 1850; Rep; holds office of City Clerk; Secretary of Warren Co. Agricultural Society; Secretary of Monmouth Driving Park Association. | rep | _ | born in Warren Co., Il |
| Rankin | N.A. | Monmouth City | Was born in Henderson, Ky., Feb. 1, 1809; married Martha Halloway, Dec. 25, 1834; had ten children, seven of whom are living; removed to Springfield, Ill., in 1834, and to Shelbyville, Ill., in 1843; came to Monmouth in Sept., 1845, and for fifteen years was one of the most prominent business men in the city and county; was a member of Monmouth's first City Council, being elected an Alderman in 1852; was elected Mayor of Monmouth in 1859 and 1860; was Asst. U.S. Assessor of Internal Revenue in 1863, and for several years; was the first President of the Warren Co. Library and Reading Room; was President of the Warren Co. Agricultural Society in 1864, also in 1865; was elected a member of the Co. Board of Supervisors in 1869 and 1870; has served several years as School Director, Justice of the Peace, etc.; has been an Elder in the Christian Church for many years; politically is a Rep. | rep | _ | born in Henderson Co., Ky |
| Rankin | Wm. H. | Monmouth City | furniture | dem | _ | Ky |
| Rathmaw | Crist | Monmouth City | cigar maker | ind | _ | from Germany |
| Raymond | A.F. | Monmouth City | carpenter | rep | _ | from Ohio |
| Raymond | E.H. | Monmouth City | carpenter | rep | _ | from Ohio |
| Redmon | John | Monmouth City | laborer | _ | _ | from Ireland |
| Reed | Samuel | Monmouth City | carpenter | rep | _ | from Penn. |
| Reed | Geo. B. | Monmouth City | moulder | dem | _ | from Ohio |
| Reed | Robert | Monmouth City | laborer | rep | Prot. | from Pennsylvania |
| Reed | Mrs. L.M. | Monmouth City | widow | _ | Bapt | from Mass. |
| Reed | Omie | Monmouth City | carpenter | rep | Meth | from Ohio |
| Regnier | Felix | Monmouth City | harness maker | dem | _ | from Ohio |
| Reid | Edward | Monmouth City | carpenter | rep | Meth | _ |
| Reid | Prof. E.F. | Monmouth City | college professor | rep | U.P. | from Ireland |
| Reid | Geo. | Monmouth City | employed in agricultural shops | _ | _ | _ |
| Reimer | Jacob | Monmouth City | laborer | rep | _ | from Denmark |
| Rice | T.H. | Monmouth City | retired | rep | Presb | from Ky |
| Rice | Wm. A. | Monmouth City | clerk 1st. Nat. Bank | rep | Presb | born Illinois |
| Richard | J.T. | Monmouth City | merchant | dem | _ | from Md |
| Richardson | Mark S. | Monmouth City | blacksmith | rep | Bapt. | _ |
| Rickel | Mary | Monmouth City | _ | _ | Meth | from Ohio |
| Rickstur | G.L. | Monmouth City | employed by Plow Co | rep | _ | from Pennsylvania |
| Riggs | John P. | Monmouth City | laborer | dem | _ | born Illinois |
| Ritchey | John H. | Monmouth City | brick mason | dem | Presb | from Pennsylvania |
| Roadhouse | Colan | Monmouth City | engineer | rep | _ | from Canada |
| Roadhouse | L. | Monmouth City | machinist | rep | _ | from Canada |
| Roadhouse | Peyton | Monmouth City | insurance agt | rep | Meth | born Illinois |
| Robertson | W.A. | Monmouth City | salesman | rep | _ | from New York |
| Robinson | Hugh | Monmouth City | engineer Weir Plow Co. | rep | _ | from Kentucky |
| Robinson | John | Monmouth City | carpenter | rep | U.P. | from Ohio |
| Robinson | L.D. | Monmouth City | farmer | rep | _ | from Virginia |
| Robinson | Moses | Monmouth City | farmer | dem | _ | from Kentucky |
| Robinson | W.A. | Monmouth City | carpenter | rep | U.P. | from Kentucky |
| Rock | Alex M. | Monmouth City | blacksmith | rep | _ | from Ohio |
| Rogers | Geo. W. | Monmouth City | teacher | rep | _ | born Illinois |
| Rogers | John | Monmouth City | painter | rep | Presb | from Virginia |
| Rogers | Prof. T.H. | Monmouth City | college professor | rep | Presb | from Indiana |
| Romig | W.A. | Monmouth City | tinner | rep | Presb | Pennsylvania |
| Root | William | Monmouth City | artist; boards at Baldwin House | rep | _ | born in Illinois |
| Rosenzweig | F. | Monmouth City | butcher | rep | Luth | from Germany |
| Ross | Mrs. Robt. | Monmouth City | widow | _ | U.P. | from Ohio |
| Ruebert | Wm. | Monmouth City | tinker | _ | _ | _ |
| Rugh | J.C. | Monmouth City | engineer | rep | _ | from Penn. |
| Rulon | D.G. | Monmouth City | painter | rep | Meth | from Ind. |
| Rulon | H.M. | Monmouth City | engineer | dem | Meth | from Indiana |
| Rulon | J.F. | Monmouth City | painter | rep | Meth | from Ind. |
| Rupp | Wm. P. | Monmouth City | city clerk and weigh master | rep | Epis | from Pennsylvania |
| Russel | A.C. | Monmouth City | coal miner | rep | Presb. | from Scotland |
| Russell | R.L. | Monmouth City | clerk | rep | Presb. | from Scotland |
| Russell | David | Monmouth City | Superintendent at Monmouth Manufacturing and Mining Co.; Monmouth; born in Scotland, 1829; came to this country in 1849; and to this Co. in 1871; married Miss A. Watson in 1869; she was born in Scotland. | _ | _ | from Scotland |