The United States Public Land Survey System (USPLSS) in Missouri is an extension of the system adopted by the United States Congress in 1785. Between 1815 and 1855, Missouri was surveyed into one mile squares called sections. Thirty-six sections in a block of land measuring six miles on each side is called a township. This created the basis for the transfer for the land from the United States Government to private owners and is the basis for all land transfers and ownership in the state today.
How are sections marked?The sections were originally marked with wood posts, rocks or mounds of earth. This record of the original survey called the General Land Office (GLO) survey is found in the original field notes and plats. Today, new permanent monuments are placed at the section and 1/4 section corners (halfway between section corners). These monuments may also be aluminum pipes, iron rods, concrete markers or iron pipes with caps stamped to identify the corner. The Missouri Department of Natural Resources, county surveyors and private surveyors will have set some of these monuments. They will have a witness post and sign set near the corner marker to identify the corner.
Select search for records by Township, Range, Direction.

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| Twp | The township north of the baseline. |
| Rng | The range. |
| Dir | The range direction West or East of 5th principle meridian. |
| Sec | The section number in the township. |
| Fract | The fractional section number. |
| Sec Ln | The section Line number. |
| Loc Org | The location of the origrinal document. |
| U.S. Survey | The U.S. survey number. |
| Doc Date | The Surveyors date or Recorders date of document or survey |
| Surveyor | Name or registration. |
| Film Loc | The number of the microfilm jacket containing the document. |
| Root Ref | The location where one would find the survey in county records. |
| ID | The record number. |
| 510 | City of St. Louis |
| 600 | State Land Survey - Corner Documents |
| 650 | Private Records |
| 651 | Private Records 651 Series Continued from 650 Series |
| 652 | Private Records 652 Series Continued from 651 Series |
| 661 | C.V. Mann - Private Records |
| 700 | Clark National Forest |
| 701 | Well Location Surveys |
| 703 | County Tax Maps |
| 710 | Mark Twain National Forest |
| 714 | Railroads |
| 719 | Walter R. Arndt - Private Records |
| 720 | Secretary of State - Original Plats |
| 721 | Secretary of State - GLO Notes |
| 722 | Commissioner of Lands - Arkansas State Boundary Surveys |
| 723 | Arkansas GLO Field Notes |
| 730 | Missouri State Highway Department |
| 742 | Missouri Department Conservation |
| 743 | Ozark National Scenic River ways |
| 745 | University Forest |
| 746 | Union Electric |
| 747 | Missouri State Park Board |
| 750 | State Land Survey Documents - Plats |
| 760 | The Little River Drainage District |
| 761 | Topographic Surveys Southeast Missouri - N.C. Frissell |
| 001 | ADAIR |
| 003 | ANDREW |
| 005 | ATCHISON |
| 007 | AUDRAIN |
| 009 | BARRY |
| 011 | BARTON |
| 013 | BATES |
| 015 | BENTON |
| 017 | BOLLINGER |
| 019 | BOONE |
| 021 | BUCHANAN |
| 023 | BUTLER |
| 025 | CALDWELL |
| 027 | CALLAWAY |
| 029 | CAMDEN |
| 031 | CAPE GIRARDEAU |
| 033 | CARROLL |
| 035 | CARTER |
| 037 | CASS |
| 039 | CEDAR |
| 041 | CHARITON |
| 043 | CHRISTIAN |
| 045 | CLARK |
| 047 | CLAY |
| 049 | CLINTON |
| 051 | COLE |
| 053 | COOPER |
| 055 | CRAWFORD |
| 057 | DADE |
| 059 | DALLAS |
| 061 | DAVIESS |
| 063 | DEKALB |
| 065 | DENT |
| 067 | DOUGLAS |
| 069 | DUNKLIN |
| 071 | FRANKLIN |
| 073 | GASCONADE |
| 075 | GENTRY |
| 077 | GREENE |
| 075 | GRUNDY |
| 081 | HARRISON |
| 083 | HENRY |
| 085 | HICKORY |
| 087 | HOLT |
| 089 | HOWARD |
| 091 | HOWELL |
| 093 | IRON |
| 095 | JACKSON |
| 097 | JASPER |
| 099 | JEFFERSON |
| 101 | JOHNSON |
| 103 | KNOX |
| 105 | LACLEDE |
| 107 | LAFAYETTE |
| 109 | LAWRENCE |
| 111 | LEWIS |
| 113 | LINCOLN |
| 115 | LINN |
| 117 | LIVINGSTON |
| 119 | MCDONALD |
| 121 | MACON |
| 123 | MADISON |
| 125 | MARIES |
| 127 | MARION |
| 129 | MERCER |
| 131 | MILLER |
| 133 | MISSISSIPPI |
| 135 | MONITEAU |
| 137 | MONROE |
| 139 | MONTGOMERY |
| 141 | MORGAN |
| 143 | NEW MADRID |
| 145 | NEWTON |
| 147 | NODAWAY |
| 149 | OREGON |
| 151 | OSAGE |
| 153 | OZARK |
| 155 | PEMISCOT |
| 157 | PERRY |
| 159 | PETTIS |
| 161 | PHELPS |
| 163 | PIKE |
| 165 | PLATTE |
| 167 | POLK |
| 169 | PULASKI |
| 171 | PUTNAM |
| 173 | RALLS |
| 175 | RANDOLPH |
| 177 | RAY |
| 179 | REYNOLDS |
| 181 | RIPLEY |
| 183 | ST CHARLES |
| 185 | ST CLAIR |
| 186 | STE.GENEVIEVE |
| 187 | ST FRANCOIS |
| 189 | ST LOUIS |
| 195 | SALINE |
| 197 | SCHUYLER |
| 199 | SCOTLAND |
| 201 | SCOTT |
| 203 | SHANNON |
| 205 | SHELBY |
| 207 | STODDARD |
| 209 | STONE |
| 211 | SULLIVAN |
| 213 | TANEY |
| 215 | TEXAS |
| 217 | VERNON |
| 219 | WARREN |
| 221 | WASHINGTON |
| 223 | WAYNE |
| 225 | WEBSTER |
| 227 | WORTH |
| 229 | WRIGHT |
| 510 | CITY ST LOUIS |