| Název | Obyvatele | Nad. výška | Souřadnice | 
| Abbot | 
 | 152 m | 37°33' N; 88°41' W | 
| Abingdon (Abingdon) | 3 378 | 227 m | 40°48' N; 90°24' W | 
| Adair | 
 | 198 m | 40°25' N; 90°29' W | 
| Adams | 
 | 230 m | 39°51' N; 91°11' W | 
| Adams Corner | 
 | 138 m | 38°30' N; 87°44' W | 
| Addieville (Addieville) | 262 | 150 m | 38°23' N; 89°29' W | 
| Addison (Addison) | 37 394 | 206 m | 41°55' N; 87°59' W | 
| Adeline (Adeline) | 142 | 239 m | 42°8' N; 89°29' W | 
| Aden | 
 | 116 m | 38°14' N; 88°27' W | 
| Adenmoor | 
 | 
 | 39°21' N; 87°47' W | 
| Adrian | 
 | 214 m | 40°31' N; 91°10' W | 
| Advance | 
 | 
 | 39°9' N; 88°1' W | 
| Afolkey | 
 | 277 m | 42°25' N; 89°34' W | 
| Afton Center | 
 | 272 m | 41°50' N; 88°46' W | 
| Agnew | 
 | 198 m | 41°47' N; 89°47' W | 
| Ahern | 
 | 
 | 41°9' N; 87°36' W | 
| Aiken | 
 | 201 m | 42°21' N; 90°24' W | 
| Akin | 
 | 148 m | 37°59' N; 88°44' W | 
| Akin Junction | 
 | 132 m | 38°0' N; 88°45' W | 
| Akron | 
 | 216 m | 40°54' N; 89°39' W | 
| Aladdin | 
 | 143 m | 39°42' N; 91°19' W | 
| Alandale | 
 | 182 m | 38°56' N; 90°13' W | 
| Albany (Albany) | 898 | 182 m | 41°47' N; 90°13' W | 
| Albers (Albers) | 1 018 | 132 m | 38°32' N; 89°36' W | 
| Albion (Albion) | 1 875 | 154 m | 38°22' N; 88°3' W | 
| Alda | 
 | 139 m | 38°27' N; 89°14' W | 
| Alden | 
 | 296 m | 42°27' N; 88°31' W | 
| Aldridge | 
 | 106 m | 37°33' N; 89°28' W | 
| Aledo (Aledo) | 3 552 | 217 m | 41°11' N; 90°44' W | 
| Alexander | 
 | 198 m | 39°43' N; 90°2' W | 
| Alexis (Alexis) | 834 | 213 m | 41°3' N; 90°33' W | 
| Alexis Junction | 
 | 202 m | 41°4' N; 90°38' W | 
| Algonquin (Algonquin) | 30 394 | 224 m | 42°9' N; 88°17' W | 
| Alhambra (Alhambra) | 644 | 172 m | 38°53' N; 89°43' W | 
| Aliceville | 
 | 190 m | 41°33' N; 89°52' W | 
| Allen | 
 | 164 m | 40°18' N; 89°38' W | 
| Allendale (Allendale) | 504 | 142 m | 38°31' N; 87°42' W | 
| Allens Corners | 
 | 302 m | 42°5' N; 88°28' W | 
| Allens Spring | 
 | 141 m | 37°22' N; 88°39' W | 
| Allentown | 
 | 203 m | 40°33' N; 89°23' W | 
| Allenville (Allenville) | 150 | 198 m | 39°33' N; 88°31' W | 
| Allerton (Allerton) | 275 | 
 | 39°54' N; 87°56' W | 
| Allright | 
 | 183 m | 39°17' N; 87°44' W | 
| Alma (Alma) | 375 | 193 m | 38°43' N; 88°54' W | 
| Almora | 
 | 259 m | 42°3' N; 88°20' W | 
| Almora Heights | 
 | 259 m | 42°2' N; 88°20' W | 
| Alonzo | 
 | 
 | 40°34' N; 87°43' W | 
| Alorton (Alorton) | 2 677 | 126 m | 38°35' N; 90°7' W | 
| Alpha (Alpha) | 704 | 244 m | 41°11' N; 90°22' W | 
| Alpine | 
 | 214 m | 41°35' N; 87°52' W | 
| Alsey (Alsey) | 242 | 188 m | 39°33' N; 90°26' W | 
| Alsip (Alsip) | 19 302 | 183 m | 41°40' N; 87°44' W | 
| Alta | 
 | 225 m | 40°48' N; 89°38' W | 
| Altamont (Altamont) | 2 257 | 189 m | 39°3' N; 88°44' W | 
| Altgeld Gardens | 
 | 179 m | 41°39' N; 87°36' W | 
| Altmar | 
 | 198 m | 41°8' N; 88°53' W | 
| Alto Pass (Alto Pass) | 388 | 237 m | 37°34' N; 89°19' W | 
| Alton (Alton) | 29 251 | 124 m | 38°53' N; 90°11' W | 
| Altona (Altona) | 543 | 230 m | 41°6' N; 90°9' W | 
| Altorf | 
 | 182 m | 41°11' N; 87°57' W | 
| Alvin (Alvin) | 316 | 
 | 40°18' N; 87°36' W | 
| Alworth | 
 | 274 m | 42°14' N; 89°14' W | 
| Amboy (Amboy) | 2 548 | 227 m | 41°42' N; 89°19' W | 
| Amenia | 
 | 207 m | 40°1' N; 88°39' W | 
| Ament Corners | 
 | 215 m | 41°35' N; 88°26' W | 
| America | 
 | 110 m | 37°8' N; 89°7' W | 
| Ames | 
 | 152 m | 38°8' N; 90°3' W | 
| Amity | 
 | 142 m | 38°46' N; 87°55' W | 
| Anchor (Anchor) | 170 | 237 m | 40°34' N; 88°32' W | 
| Ancona | 
 | 191 m | 41°2' N; 88°52' W | 
| Krok zpět, Ukázat kontinenty ... |