Sir yn nhalaith Missouri, Unol Daleithiau America yw Jefferson County. Cafodd ei henwi ar ôl Thomas Jefferson. Sefydlwyd Jefferson County, Missouri ym 1818 a sedd weinyddol y sir (a elwir weithiau'n 'dref sirol' neu'n 'brifddinas y sir') yw Hillsboro.
Mae ganddi arwynebedd o 1,720 cilometr sgwâr. Allan o'r arwynebedd hwn, y canran o ffurfiau dyfrol, megis llynnoedd ac afonydd, yw 1.2% . Yn ôl cyfrifiad y wlad, poblogaeth y sir yw: 226,739 (1 Ebrill 2020)[1]. Mewn cymhariaeth, yn 2016 roedd poblogaeth Caerdydd yn 361,462 a Rhyl tua 26,000.[2]
Mae'n ffinio gyda St. Louis County, St. Francois County, Washington County, Franklin County, Ste. Genevieve County, Monroe County. Cedwir rhestr swyddogol o henebion ac adeiladau cofrestredig y sir yn: National Register of Historic Places listings in Jefferson County, Missouri.
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Map o leoliad y sir o fewn Missouri |
Lleoliad Missouri o fewn UDA
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Ceir sawl sir o’r un enw gan gynnwys:
- Jefferson County, Alabama
- Jefferson County, Arkansas
- Jefferson County, Colorado
- Jefferson County, Efrog Newydd
- Jefferson County, Florida
- Jefferson County, Georgia
- Jefferson County, Gorllewin Virginia
- Jefferson County, Idaho
- Jefferson County, Illinois
- Jefferson County, Indiana
- Jefferson County, Iowa
- Jefferson County, Kansas
- Jefferson County, Kentucky
- Jefferson County, Mississippi
- Jefferson County, Missouri
- Jefferson County, Montana
- Jefferson County, Nebraska
Mae gan y sir yma boblogaeth o tua 226,739 (1 Ebrill 2020)[1]. Dyma rai o'r dinasoedd, trefi neu gymunedau mwyaf poblog y sir:
Rhestr Wicidata:
Diwedd y rhestr a gynhyrchwyd yn otomatig o Wicidata.
Taleithiau Unol Daleithiau America |
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| Alabama, Alaska, Arizona, Arkansas, Califfornia, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, Mecsico Newydd, Efrog Newydd, Gogledd Dakota, Gogledd Carolina, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, De Dakota, De Carolina, Tennessee, Texas, Utah, Vermont, Virginia, Washington, Gorllewin Virginia, Wisconsin, Wyoming, District of Columbia, Samoa America, Ynysoedd Americanaidd y Wyryf, Guam, Ynysoedd Gogledd Mariana, Puerto Rico |
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Siroedd (a phrif drefi) o fewn talaith Missouri |
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| Jackson County, Clark County, Ralls County, Wright County, Maries County, Adair County, Dunklin County, Texas County, Cedar County, Bates County, Atchison County, Cooper County, Butler County, Crawford County, Clay County, Clinton County, Cole County, Barton County, Caldwell County, Lincoln County, Howell County, Oregon County, Boone County, Bollinger County, Buchanan County, Morgan County, Dallas County, Cape Girardeau County, Andrew County, DeKalb County, Dade County, Camden County, Audrain County, Carter County, Douglas County, Chariton County, Cass County, Daviess County, Callaway County, Christian County, Dent County, Barry County, Phelps County, Benton County, Randolph County, New Madrid County, Saline County, Ripley County, Ste. Genevieve County, St. Clair County, Nodaway County, Polk County, Reynolds County, Ozark County, St. Charles County, Pike County, Ray County, Putnam County, Newton County, Osage County, Platte County, Perry County, Pulaski County, Moniteau County, Jefferson County, Livingston County, Macon County, Lafayette County, Mississippi County, Johnson County, Monroe County, Marion County, McDonald County, Linn County, Lewis County, Knox County, Miller County, Laclede County, Lawrence County, Iron County, Madison County, Montgomery County, Jasper County, Mercer County, Greene County, Hickory County, Gentry County, Henry County, Franklin County, Gasconade County, Grundy County, Harrison County, Holt County, Carroll County, Howard County, Wayne County, Vernon County, Shelby County, Stone County, Sullivan County, Washington County, Taney County, Scotland County, Scott County, Pemiscot County, Shannon County, Warren County, Pettis County, Stoddard County, Schuyler County, Worth County, Webster County, St. Francois County, St. Louis County, St. Louis |
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