Jefferson County, Alabama
Sir yn nhalaith Alabama, Unol Daleithiau America yw Jefferson County. Cafodd ei henwi ar ôl Thomas Jefferson. Sefydlwyd Jefferson County, Alabama ym 1819 a sedd weinyddol y sir (a elwir weithiau'n 'dref sirol' neu'n 'brifddinas y sir') yw Birmingham.
 | |
| Math | sir  |
|---|---|
| Enwyd ar ôl | Thomas Jefferson |
| Prifddinas | Birmingham |
| Poblogaeth | 674,721 |
| Sefydlwyd |
|
| Daearyddiaeth | |
| Gwlad |  Unol Daleithiau |
| Arwynebedd | 2,911 km² |
| Talaith | Alabama |
| Yn ffinio gyda | Tuscaloosa County, Bibb County, Blount County, Walker County, St. Clair County, Shelby County |
| Cyfesurynnau | 33.52°N 86.81°W |
 | |
Mae ganddi arwynebedd o 2,911 cilometr sgwâr. Allan o'r arwynebedd hwn, y canran o ffurfiau dyfrol, megis llynnoedd ac afonydd, yw 1.1% . Yn ôl cyfrifiad y wlad, poblogaeth y sir yw: 674,721 (1 Ebrill 2020)[1]. Mewn cymhariaeth, yn 2016 roedd poblogaeth Caerdydd yn 361,462 a Rhyl tua 26,000.[2]
Mae'n ffinio gyda Tuscaloosa County, Bibb County, Blount County, Walker County, St. Clair County, Shelby County. Cedwir rhestr swyddogol o henebion ac adeiladau cofrestredig y sir yn: National Register of Historic Places listings in Jefferson County, Alabama.
 |
|
| Map o leoliad y sir o fewn Alabama |
Lleoliad Alabama 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
golyguMae gan y sir yma boblogaeth o tua 674,721 (1 Ebrill 2020)[1]. Dyma rai o'r dinasoedd, trefi neu gymunedau mwyaf poblog y sir:
Rhestr Wicidata:
| Tref neu gymuned | Poblogaeth | Arwynebedd |
|---|---|---|
| Hoover | 92606[3][3] | 124.861404 cilometr sgwâr[4] |
| Vestavia Hills | 39102[3][3] | 52.408415 cilometr sgwâr[5] 50.834009 cilometr sgwâr[4] |
| Homewood | 26414[3][3] | 21.828415 cilometr sgwâr[4] |
| Trussville | 26123[3][3] | 87.287325 cilometr sgwâr[5] 86.524039 cilometr sgwâr[4] |
| Bessemer | 26019[6][3][3] | 105.238474 cilometr sgwâr[5] |
| Mountain Brook | 22461[3][3] | 33.291729 cilometr sgwâr[5] 33.17634 cilometr sgwâr[4] |
| Helena | 20914[3][3] | 54.78429 cilometr sgwâr[5] 53.547854 cilometr sgwâr[4] |
| Hueytown | 16776[3][3] | 51.010412 cilometr sgwâr[5] 51.020156 cilometr sgwâr[4] |
| Center Point | 16406[3] | 16.091013 cilometr sgwâr[5] |
| Gardendale | 16044[3][3] | 59.380356 cilometr sgwâr[5] 58.40024 cilometr sgwâr[4] |
| Irondale | 13497[3][3] | 45.278761 cilometr sgwâr[5] |
| McCalla | 12965[3] | |
| Leeds | 12324[3][3] | 58.796109 cilometr sgwâr[5] 59.783715 cilometr sgwâr[4] |
| Forestdale | 10409[3][3] | 17.479591 cilometr sgwâr[5] |
| Clay | 10291[3] | 25.872388 cilometr sgwâr[5] |
Cyfeiriadau
golygu- ↑ 1.0 1.1 https://data.census.gov/cedsci/table?t=Populations%20and%20People&g=0100000US,%241600000&y=2020. Cyfrifiad yr Unol Daleithiau 2020. golygydd: Biwro Cyfrifiad yr Unol Daleithiau. dyddiad cyrchiad: 1 Ionawr 2022.
- ↑ statswales.gov.wales; adalwyd 25 Mawrth 2020.
- ↑ 3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 3.09 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 3.20 3.21 3.22 3.23 3.24 3.25 3.26 https://data.census.gov/cedsci/table?t=Populations%20and%20People&g=0100000US,%241600000&y=2020
- ↑ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 https://www.census.gov/geographies/reference-files/time-series/geo/gazetteer-files.2010.html
- ↑ 5.00 5.01 5.02 5.03 5.04 5.05 5.06 5.07 5.08 5.09 5.10 5.11 2016 U.S. Gazetteer Files
- ↑ https://www.census.gov/programs-surveys/decennial-census/decade/2020/2020-census-main.html