Washington County, Illinois
Sir yn nhalaith Illinois, Unol Daleithiau America yw Washington County. Cafodd ei henwi ar ôl George Washington. Sefydlwyd Washington County, Illinois ym 1818 a sedd weinyddol y sir (a elwir weithiau'n 'dref sirol' neu'n 'brifddinas y sir') yw Nashville, Illinois.
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| Math | sir  |
|---|---|
| Enwyd ar ôl | George Washington |
| Prifddinas | Nashville, Illinois |
| Poblogaeth | 13,761 |
| Sefydlwyd |
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| Daearyddiaeth | |
| Gwlad |  Unol Daleithiau America |
| Arwynebedd | 1,461 km² |
| Talaith | Illinois |
| Yn ffinio gyda | Clinton County, Perry County, St. Clair County, Randolph County, Marion County, Jefferson County |
| Cyfesurynnau | 38.35°N 89.42°W |
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Mae ganddi arwynebedd o 1,461 cilometr sgwâr. Allan o'r arwynebedd hwn, y canran o ffurfiau dyfrol, megis llynnoedd ac afonydd, yw 0.2% . Yn ôl cyfrifiad y wlad, poblogaeth y sir yw: 13,761 (1 Ebrill 2020)[1]. Mewn cymhariaeth, yn 2016 roedd poblogaeth Caerdydd yn 361,462 a Rhyl tua 26,000.[2]
Mae'n ffinio gyda Clinton County, Perry County, St. Clair County, Randolph County, Marion County, Jefferson County. Cedwir rhestr swyddogol o henebion ac adeiladau cofrestredig y sir yn: National Register of Historic Places listings in Illinois.
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| Map o leoliad y sir o fewn Illinois | Lleoliad Illinois o fewn UDA |
Ceir sawl sir o’r un enw gan gynnwys:
- Washington County, Alabama
- Washington County, Arkansas
- Washington County, Colorado
- Washington County, Efrog Newydd
- Washington County, Florida
- Washington County, Georgia
- Washington County, Gogledd Carolina
- Washington County, Idaho
- Washington County, Illinois
- Washington County, Indiana
- Washington County, Iowa
- Washington County, Kansas
- Washington County, Kentucky
- Washington County, Maine
- Washington County, Maryland
- Washington County, Minnesota
- Washington County, Mississippi
Trefi mwyaf
Mae gan y sir yma boblogaeth o tua 13,761 (1 Ebrill 2020)[1]. Dyma rai o'r dinasoedd, trefi neu gymunedau mwyaf poblog y sir:
Rhestr Wicidata:
| Tref neu gymuned | Poblogaeth | Arwynebedd |
|---|---|---|
| Centralia, Illinois | 12182[3] | 23.897877[4] 23.893917[5] |
| Nashville Township | 3488[3] | 34.78 |
| Nashville, Illinois | 3105[3] | 7.267408[4] |
| Okawville Township | 1960[3] | 36.35 |
| Okawville, Illinois | 1369[3] | 2.05 |
| Irvington Township, Illinois | 1181[3] | 48.56 |
| Hoyleton Township | 1035[3] | 51.07 |
| Wamac, Illinois | 985[3] | 1.43 3.69444[5] |
| Ashley Township | 761[3] | 24.44 |
| Du Bois Township, Illinois | 643[3] | 36.8 |
| Beaucoup Township | 581[3] | 37.97 |
| Irvington, Illinois | 581[3] | 1.03 |
| Oakdale Township | 561[3] | 37.45 |
| Lively Grove Township | 550[3] | 35.96 |
| Pilot Knob Township | 541[3] | 35.32 |