Jefferson County, Colorado
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| Math | sir  |
|---|---|
| Enwyd ar ôl | Thomas Jefferson |
| Prifddinas | Golden, Colorado |
| Poblogaeth | 582,910 |
| Sefydlwyd |
|
| Daearyddiaeth | |
| Gwlad |  Unol Daleithiau America |
| Arwynebedd | 2,015 km² |
| Talaith | Colorado |
| Yn ffinio gyda | Boulder County, Swydd Broomfield, Adams County, Denver County, Arapahoe County, Douglas County, Teller County, Park County, Clear Creek County, Gilpin County |
| Cyfesurynnau | 39.59°N 105.25°W |
 | |
Sir yn nhalaith Colorado, Unol Daleithiau America yw Jefferson County. Cafodd ei henwi ar ôl Thomas Jefferson. Sefydlwyd Jefferson County, Colorado ym 1861 a sedd weinyddol y sir (a elwir weithiau'n 'dref sirol' neu'n 'brifddinas y sir') yw Golden, Colorado.
Mae ganddi arwynebedd o 2,015 cilometr sgwâr. Allan o'r arwynebedd hwn, y canran o ffurfiau dyfrol, megis llynnoedd ac afonydd, yw 1.3% . Yn ôl cyfrifiad y wlad, poblogaeth y sir yw: 582,910 (1 Ebrill 2020)[1]. Mewn cymhariaeth, yn 2016 roedd poblogaeth Caerdydd yn 361,462 a Rhyl tua 26,000.[2]
Mae'n ffinio gyda Boulder County, Swydd Broomfield, Adams County, Denver County, Arapahoe County, Douglas County, Teller County, Park County, Clear Creek County, Gilpin County. Cedwir rhestr swyddogol o henebion ac adeiladau cofrestredig y sir yn: National Register of Historic Places listings in Jefferson County, Colorado.
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| Map o leoliad y sir o fewn Colorado |
Lleoliad Colorado 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[golygu | golygu cod y dudalen]
Mae gan y sir yma boblogaeth o tua 582,910 (1 Ebrill 2020)[1]. Dyma rai o'r dinasoedd, trefi neu gymunedau mwyaf poblog y sir:
Rhestr Wicidata:
| Tref neu gymuned | Poblogaeth | Arwynebedd |
|---|---|---|
| Lakewood, Colorado | 142980[3][4] 155984[5] |
114.095351[6] 114.11638[3] |
| Arvada, Colorado | 106433[3][4] 124402[5] 124402 |
101.930253[6] 92.616061[3] |
| Westminster, Colorado | 106114[3][4] 116317[5] 116317 |
88.188148[6] 87.669884[3] |
| Littleton, Colorado | 41737[7][4] 45652[5] |
35.795221[6] 35.93482[7] |
| Ken Caryl, Colorado | 32438[7][4] 33811[5] 33811 |
25.196853[6] 25.265756[7] |
| Wheat Ridge, Colorado | 32913 30166[7][4] 32398[5] 32398 |
24.897337[6] 24.727368[7] |
| Columbine, Colorado | 24280[7][4] 25229[5] 25229 |
17.491186[6] 17.551188[7] |
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Cyfeiriadau[golygu | golygu cod y dudalen]
- ↑ 1.0 1.1 https://data.census.gov/cedsci/table?t=Populations%20and%20People&g=0100000US,%241600000&y=2020; golygydd: Biwro Cyfrifiad yr Unol Daleithiau; dyddiad cyrchiad: 1 Ionawr 2022.
- ↑ statswales.gov.wales; adalwyd 25 Mawrth 2020.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 https://www.census.gov/geographies/reference-files/time-series/geo/gazetteer-files.2010.html
- ↑ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 https://data.census.gov/cedsci/table?g=0100000US%241600000&y=2010&d=DEC%20Redistricting%20Data%20%28PL%2094-171%29
- ↑ 5.0 5.1 5.2 5.3 5.4 5.5 5.6 https://data.census.gov/cedsci/table?t=Populations%20and%20People&g=0100000US,%241600000&y=2020
- ↑ 6.0 6.1 6.2 6.3 6.4 6.5 6.6 2016 U.S. Gazetteer Files
- ↑ 7.0 7.1 7.2 7.3 7.4 7.5 7.6 7.7 2010 U.S. Gazetteer Files