Sir yn nhalaith Illinois, Unol Daleithiau America yw Logan County. Cafodd ei henwi ar ôl John A. Logan. Sefydlwyd Logan County, Illinois ym 1839 a sedd weinyddol y sir (a elwir weithiau'n 'dref sirol' neu'n 'brifddinas y sir') yw Lincoln.
 | |
| Math | sir  |
|---|---|
| Enwyd ar ôl | John A. Logan |
| Prifddinas | Lincoln |
| Poblogaeth | 27,987 |
| Sefydlwyd |
|
| Daearyddiaeth | |
| Gwlad |  Unol Daleithiau America |
| Arwynebedd | 1,603 km² |
| Talaith | Illinois |
| Yn ffinio gyda | Mason County, Tazewell County, McLean County, DeWitt County, Macon County, Sangamon County, Menard County |
| Cyfesurynnau | 40.13°N 89.36°W |
 | |
Mae ganddi arwynebedd o 1,603 cilometr sgwâr. Allan o'r arwynebedd hwn, y canran o ffurfiau dyfrol, megis llynnoedd ac afonydd, yw 0.1% . Yn ôl cyfrifiad y wlad, poblogaeth y sir yw: 27,987 (1 Ebrill 2020)[1]. Mewn cymhariaeth, yn 2016 roedd poblogaeth Caerdydd yn 361,462 a Rhyl tua 26,000.[2]
Mae'n ffinio gyda Mason County, Tazewell County, McLean County, DeWitt County, Macon County, Sangamon County, Menard County. Cedwir rhestr swyddogol o henebion ac adeiladau cofrestredig y sir yn: National Register of Historic Places listings in Logan County.
| [[File:Map of Illinois highlighting Logan County.svg|frameless]] |
|
| Map o leoliad y sir o fewn Illinois | Lleoliad Illinois o fewn UDA |
Ceir sawl sir o’r un enw gan gynnwys:
- Logan County, Arkansas
- Logan County, Colorado
- Logan County, Gogledd Dakota
- Logan County, Gorllewin Virginia
- Logan County, Illinois
- Logan County, Kansas
- Logan County, Kentucky
- Logan County, Nebraska
- Logan County, Ohio
- Logan County, Oklahoma
Trefi mwyaf
Mae gan y sir yma boblogaeth o tua 27,987 (1 Ebrill 2020)[1]. Dyma rai o'r dinasoedd, trefi neu gymunedau mwyaf poblog y sir:
Rhestr Wicidata:
| Tref neu gymuned | Poblogaeth | Arwynebedd |
|---|---|---|
| Lincoln | 13288[3] | 16.566536[4] 16.578796[5] |
| East Lincoln Township | 7736[3] | 36.1 |
| West Lincoln Township | 7437[3] | 38.26 |
| Broadwell Township | 3115[3] | 33.41 |
| Mount Pulaski Township | 2011[3] | 54.05 |
| Atlanta Township | 1906[3] | 24.2 |
| Atlanta | 1669[3] | 1.27 3.292413[5] |
| Mount Pulaski | 1537[3] | 1.13 2.930958[5] |
| Orvil Township | 977[3] | 41.92 |
| Chester Township | 654[3] | 38.31 |
| Corwin Township | 608[3] | 33.59 |
| Laenna Township | 526[3] | 35.07 |
| Elkhart Township | 503[3] | 51.7 |
| Aetna Township | 476[3] | 34.66 |
| Emden | 467[3] | 0.607023[4] 0.607024[5] |
Cyfeiriadau
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