Jefferson County, Iowa

Oddi ar Wicipedia
Jefferson County
Jefferson County, Iowa Courthouse.jpg
Mathsir yn Iowa Edit this on Wikidata
Enwyd ar ôlThomas Jefferson Edit this on Wikidata
PrifddinasFairfield, Iowa Edit this on Wikidata
Poblogaeth15,663 Edit this on Wikidata
Sefydlwyd
  • 1839 Edit this on Wikidata
Daearyddiaeth
GwladBaner Unol Daleithiau America Unol Daleithiau America
Arwynebedd1,131 km² Edit this on Wikidata
TalaithIowa
Yn ffinio gydaWashington County, Van Buren County, Wapello County, Davis County, Henry County, Keokuk County Edit this on Wikidata
Cyfesurynnau41.0314°N 91.9447°W Edit this on Wikidata
Map
[golygwch ar Wicidata]

Sir yn nhalaith Iowa, Unol Daleithiau America yw Jefferson County. Cafodd ei henwi ar ôl Thomas Jefferson. Sefydlwyd Jefferson County, Iowa ym 1839 a sedd weinyddol y sir (a elwir weithiau'n 'dref sirol' neu'n 'brifddinas y sir') yw Fairfield, Iowa.

Mae ganddi arwynebedd o 1,131 cilometr sgwâr. Allan o'r arwynebedd hwn, y canran o ffurfiau dyfrol, megis llynnoedd ac afonydd, yw 0.3% . Yn ôl cyfrifiad y wlad, poblogaeth y sir yw: 15,663 (1 Ebrill 2020)[1]. Mewn cymhariaeth, yn 2016 roedd poblogaeth Caerdydd yn 361,462 a Rhyl tua 26,000.[2]

Mae'n ffinio gyda Washington County, Van Buren County, Wapello County, Davis County, Henry County, Keokuk County. Cedwir rhestr swyddogol o henebion ac adeiladau cofrestredig y sir yn: National Register of Historic Places listings in Jefferson County, Iowa.

Map of Iowa highlighting Jefferson County.svg

Iowa in United States.svg

Map o leoliad y sir
o fewn Iowa		 Lleoliad Iowa
o fewn UDA

Ceir sawl sir o’r un enw gan gynnwys:


Trefi mwyaf[golygu | golygu cod]

Mae gan y sir yma boblogaeth o tua 15,663 (1 Ebrill 2020)[1]. Dyma rai o'r dinasoedd, trefi neu gymunedau mwyaf poblog y sir:

Rhestr Wicidata:

Tref neu gymuned Poblogaeth Arwynebedd
Fairfield, Iowa 9509
9464[3][4]
9416[5] 		16.986331[6]
16.627674[3]
Buchanan Township 515[5]
1561[4]
Center Township 1181[5]
1158[4]
Locust Grove Township 716[5]
768[4]
Liberty Township 679[5]
691[4]
Lockridge Township 627[5]
646[4]
Cedar Township 502[5][4]
Batavia, Iowa 499[3][4]
430[5] 		1.541246[6]
1.541266[3]
Diwedd y rhestr a gynhyrchwyd yn otomatig o Wicidata.
gw • sg • go
Taleithiau Baner Unol Daleithiau America Unol Daleithiau America
gw • sg • go
Siroedd (a phrif drefi) o fewn talaith Iowa
Adair County, Adams County, Allamakee County, Appanoose County, Audubon County, Benton County, Black Hawk County, Boone County, Bremer County, Buchanan County, Buena Vista County, Butler County, Calhoun County, Carroll County, Cass County, Cedar County, Cerro Gordo County, Cherokee County, Chickasaw County, Clarke County, Clay County, Clayton County, Clinton County, Crawford County, Dallas County, Davis County, Decatur County, Delaware County, Des Moines County, Dickinson County, Dubuque County, Emmet County, Fayette County, Floyd County, Franklin County, Fremont County, Greene County, Grundy County, Guthrie County, Hamilton County, Hancock County, Hardin County, Harrison County, Henry County, Howard County, Humboldt County, Ida County, Iowa County, Jackson County, Jasper County, Jefferson County, Johnson County, Jones County, Keokuk County, Kossuth County, Lee County, Linn County, Louisa County, Lucas County, Lyon County, Madison County, Mahaska County, Marion County, Marshall County, Mills County, Mitchell County, Monona County, Monroe County, Montgomery County, Muscatine County, O'Brien County, Osceola County, Page County, Palo Alto County, Plymouth County, Pocahontas County, Polk County, Pottawattamie County, Poweshiek County, Ringgold County, Sac County, Scott County, Shelby County, Sioux County, Story County, Tama County, Taylor County, Union County, Van Buren County, Wapello County, Warren County, Washington County, Wayne County, Webster County, Winnebago County, Winneshiek County, Woodbury County, Worth County, Wright County

Cyfeiriadau[golygu | golygu cod]

  1. ↑ 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.
  2. ↑ statswales.gov.wales; adalwyd 25 Mawrth 2020.
  3. ↑ 3.0 3.1 3.2 3.3 2010 U.S. Gazetteer Files
  4. ↑ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 https://data.census.gov/cedsci/table?g=0100000US%241600000&y=2010&d=DEC%20Redistricting%20Data%20%28PL%2094-171%29
  5. ↑ 5.0 5.1 5.2 5.3 5.4 5.5 5.6 5.7 https://data.census.gov/cedsci/table?t=Populations%20and%20People&g=0100000US,%241600000&y=2020
  6. ↑ 6.0 6.1 2016 U.S. Gazetteer Files
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