Founded on Jan 13, 1846, Polk County is one of 99 counties in the state of Iowa. Historically, Polk County was formed from Native American lands. The city of Des Moines is the county seat. With FIPS code of 153, Polk County has a population of 496,844 and area of 570 square miles (1,476 km2).
List of all cities in Polk County, IA alphabetically
| City/Town | Postal Code | Area Code |
| Adventureland Estates, IA | 50009 | 515 |
| Alleman, IA | 50007 | 515 |
| Allied Group, IA | 50391 | 515 |
| Altoona, IA | 50009 | 515 |
| American Republic, IA | 50334 | 515 |
| Ankeny, IA | 50021 | 515 |
| 50023 | 515 | |
| Berwick, IA | 50032 | 515 |
| Bondurant, IA | 50035 | 515 |
| Camp Dodge, IA | 50131 | 515 |
| Capitol Heights, IA | 50317 | 515 |
| Carbondale, IA | 50317 | 515 |
| Carney, IA | 50021 | 515 |
| CDS, IA | 50947 | 515 |
| 50950 | 515 | |
| CDS Main, IA | 50347 | 515 |
| Citigroup, IA | 50359 | 515 |
| 50360 | 515 | |
| 50361 | 515 | |
| 50362 | 515 | |
| 50363 | 515 | |
| 50364 | 515 | |
| 50367 | 515 | |
| 50368 | 515 | |
| 50369 | 515 | |
| Citigroup BRM, IA | 50369 | 515 |
| Clive, IA | 50324 | 515 |
| 50325 | 515 | |
| Communications Data Services, IA | 50340 | 515 |
| Crocker, IA | 50226 | 515 |
| Des Moines, IA | 50301 | 515 |
| 50302 | 515 | |
| 50303 | 515 | |
| 50304 | 515 | |
| 50305 | 515 | |
| 50306 | 515 | |
| 50307 | 515 | |
| 50308 | 515 | |
| 50309 | 515 | |
| 50310 | 515 | |
| 50311 | 515 | |
| 50312 | 515 | |
| 50313 | 515 | |
| 50314 | 515 | |
| 50315 | 515 | |
| 50316 | 515 | |
| 50317 | 515 | |
| 50318 | 515 | |
| 50319 | 515 | |
| 50320 | 515 | |
| 50321 | 515 | |
| 50322 | 515 | |
| 50323 | 515 | |
| 50324 | 515 | |
| 50325 | 515 | |
| 50327 | 515 | |
| 50328 | 515 | |
| 50329 | 515 | |
| 50330 | 515 | |
| 50331 | 515 | |
| 50332 | 515 | |
| 50333 | 515 | |
| 50334 | 515 | |
| 50335 | 515 | |
| 50336 | 515 | |
| 50339 | 515 | |
| 50340 | 515 | |
| 50347 | 515 | |
| 50359 | 515 | |
| 50360 | 515 | |
| 50361 | 515 | |
| 50362 | 515 | |
| 50363 | 515 | |
| 50364 | 515 | |
| 50367 | 515 | |
| 50368 | 515 | |
| 50369 | 515 | |
| 50380 | 515 | |
| 50381 | 515 | |
| 50391 | 515 | |
| 50392 | 515 | |
| 50393 | 515 | |
| 50394 | 515 | |
| 50395 | 515 | |
| 50396 | 515 | |
| 50397 | 515 | |
| 50398 | 515 | |
| 50936 | 515 | |
| 50940 | 515 | |
| 50947 | 515 | |
| 50950 | 515 | |
| 50980 | 515 | |
| 50981 | 515 | |
| East Des Moines, IA | 50309 | 515 |
| EDS, IA | 50336 | 515 |
| EDS Other, IA | 50380 | 515 |
| 50381 | 515 | |
| EDS-Proactive, IA | 50936 | 515 |
| EDS-SC/YE, IA | 50980 | 515 |
| 50981 | 515 | |
| Elkhart, IA | 50073 | 515 |
| Enterprise, IA | 50073 | 515 |
| Equitable Life Assurance, IA | 50339 | 515 |
| First Interstate Bank, IA | 50396 | 515 |
| Grimes, IA | 50111 | 515 |
| Herrold, IA | 50111 | 515 |
| Highland Park, IA | 50313 | 515 |
| Ivy, IA | 50009 | 515 |
| Johnston, IA | 50131 | 515 |
| Lovington, IA | 50322 | 515 |
| Lundstrom Heights, IA | 50021 | 515 |
| Marquisville, IA | 50313 | 515 |
| Marsh Inc, IA | 50398 | 515 |
| Midamerican Energy, IA | 50335 | 515 |
| Mitchellville, IA | 50169 | 515 |
| Norwoodville, IA | 50317 | 515 |
| Oralabor, IA | 50021 | 515 |
| Pleasant Hill, IA | 50317 | 515 |
| 50327 | 515 | |
| Polk City, IA | 50226 | 515 |
| Principal Financial, IA | 50392 | 515 |
| Risingsun, IA | 50317 | 515 |
| Runnells, IA | 50237 | 515 |
| Santiago, IA | 50169 | 515 |
| Saydel, IA | 50313 | 515 |
| Saylorville, IA | 50313 | 515 |
| Sheldahl, IA | 50243 | 515 |
| South Des Moines, IA | 50315 | 515 |
| 50320 | 515 | |
| 50321 | 515 | |
| State of Iowa, IA | 50319 | 515 |
| Urbandale, IA | 50322 | 515 |
| 50323 | 515 | |
| 50391 | 515 | |
| 50398 | 515 | |
| USPS Bmc, IA | 50395 | 515 |
| VISA Mastercard, IA | 50330 | 515 |
| WDM, IA | 50265 | 515 |
| 50266 | 515 | |
| Wells Fargo Mortgage, IA | 50328 | 515 |
| 50329 | 515 | |
| 50330 | 515 | |
| 50331 | 515 | |
| 50332 | 515 | |
| West Des Moines, IA | 50265 | 515 |
| 50266 | 515 | |
| 50368 | 515 | |
| 50398 | 515 | |
| White Oak, IA | 50073 | 515 |
| Windsor Heights, IA | 50311 | 515 |
| 50312 | 515 | |
| 50322 | 515 | |
| 50324 | 515 | |
| Younkers, IA | 50397 | 515 |