Jefferson Parish, Louisiana
Sir yn nhalaith Louisiana, Unol Daleithiau America yw Jefferson Parish. Cafodd ei henwi ar ôl Thomas Jefferson. Sefydlwyd Jefferson Parish, Louisiana ym 1825 a sedd weinyddol y sir (a elwir weithiau'n 'dref sirol' neu'n 'brifddinas y sir') yw Gretna, Louisiana.
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| Math | sir  |
|---|---|
| Enwyd ar ôl | Thomas Jefferson |
| Prifddinas | Gretna, Louisiana |
| Poblogaeth | 440,781 |
| Sefydlwyd |
|
| Daearyddiaeth | |
| Gwlad |  Unol Daleithiau America |
| Arwynebedd | 1,663 km² |
| Talaith | Louisiana |
| Gerllaw | Llyn Pontchartrain, Gwlff Mecsico |
| Yn ffinio gyda | St. Tammany Parish, Orleans Parish, Louisiana, Plaquemines Parish, Tangipahoa Parish, Lafourche Parish, St. Charles Parish, St. John the Baptist Parish |
| Cyfesurynnau | 29.73°N 90.1°W |
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Mae ganddi arwynebedd o 1,663 cilometr sgwâr. Allan o'r arwynebedd hwn, y canran o ffurfiau dyfrol, megis llynnoedd ac afonydd, yw 56% . Yn ôl cyfrifiad y wlad, poblogaeth y sir yw: 440,781 (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. Tammany Parish, Orleans Parish, Louisiana, Plaquemines Parish, Tangipahoa Parish, Lafourche Parish, St. Charles Parish, St. John the Baptist Parish.
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| Map o leoliad y sir o fewn Louisiana | Lleoliad Louisiana o fewn UDA |
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
Trefi mwyaf
Mae gan y sir yma boblogaeth o tua 440,781 (1 Ebrill 2020)[1]. Dyma rai o'r dinasoedd, trefi neu gymunedau mwyaf poblog y sir:
Rhestr Wicidata:
| Tref neu gymuned | Poblogaeth | Arwynebedd |
|---|---|---|
| Metairie, Louisiana | 143507[3] | 60.253576[4] 60.253572[5] |
| Kenner, Louisiana | 66448[6][3] | 39.140119[4] 38.877458[5] 39.141054[7] 38.541001 0.600053 |
| Marrero, Louisiana | 32382[3] | 20.164697[4] 22.262312[5] |
| Terrytown, Louisiana | 25278[3] | 9.642113[4] 9.636746[5] |
| Harvey, Louisiana | 22236[3] | 18.410224[4] 18.324642[5] |
| Estelle, Louisiana | 17952[3] | 13.030496[4] 13.006177[5] |
| Gretna, Louisiana | 17814[3] | 11.572204[4] 11.659627[5] |
| River Ridge, Louisiana | 13591[3] | 9.18505[4] 9.185022[5] |
| Woodmere, Louisiana | 11238[3] | 9.958355[4][5] |
| Jefferson, Louisiana | 10633[3] | 8.471245[4] 8.488784[5] |
| Timberlane, Louisiana | 10364[3] | 3.875519[4] 3.879045[5] |
| Waggaman, Louisiana | 9835[3] | 17.004518[4] 17.004516[5] |
| Harahan, Louisiana | 9116[3] | 2.49 6.459456[5] |
| Westwego, Louisiana | 8568[3] | 3.59 9.298305[5] |
| Bridge City, Louisiana | 7219[3] | 13.584962[4] 13.589497[8] |