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IA-4 · Iowa

Explore ZIP codes in U.S. House district IA-4 — in Iowa — 351 ZIP codes — 793,440 residents. Population, income, and housing at a glance.

District
IA-4
ZIP codes
351
Population
793,440
State
Iowa
Median household income (avg.)
$72,623
Average home value
$147,430
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Where is congressional district IA-4?

Congressional District IA-4 includes 351 indexable ZIP codes in Iowa on US5, with a combined ZIP-area population of about 793,440.

Larger population clusters inside this district include Sioux City, IA, Council Bluffs, IA, Ames, IA, Marshalltown, IA, and Fort Dodge, IA. Open any ZIP below for full demographics, housing, schools, and nearby services.

The most populous ZIP currently listed for IA-4 is 51503 (about 37,411 residents).

Income and housing in IA-4

Across ZIPs with income data in IA-4, the average median household income is about $72,623 — about 3% below the U.S. median ($75,149).

Average median home value across those ZIPs is about $147,430.

On this page’s income ranking, ZIP 50101 is near the top at about $168,333.

What is a U.S. House district?

Congressional districts are the geographic units that elect members of the U.S. House of Representatives. District IA-4 is one of Iowa's seats in the House; boundaries are redrawn after each decennial Census.

District lines are not the same as ZIP codes, cities, counties, area codes, or TV markets. A single ZIP can touch more than one district at the edges, and US5 maps each published ZIP to a primary district code for browseability.

How to use this IA-4 page

US5 joins published ZIP profiles to congressional district codes so you can scan the district as a list of postal codes with population, income, and housing — then open any ZIP for maps, schools, commute, and climate context.

This is a place-based research view, not a voter roll, campaign tool, or live election results feed. Counts can change when geography publishes update.

ZIP codes in IA-4

ZIP City County State Population Income Home value
51503 Council Bluffs Pottawattamie County IA 37,411 $76,064 $252,600
51501 Council Bluffs Pottawattamie County IA 34,928 $59,314 $140,400
50010 Ames Story County IA 33,428 $65,701 $243,200
50014 Ames Story County IA 31,429 $57,372 $312,700
50158 Marshalltown Marshall County IA 31,163 $71,212 $130,500
50501 Fort Dodge Webster County IA 28,633 $66,130 $139,700
51106 Sioux City Woodbury County IA 28,381 $74,486 $186,300
51104 Sioux City Woodbury County IA 22,792 $74,984 $193,000
51103 Sioux City Woodbury County IA 17,145 $57,212 $124,400
50036 Boone Boone County IA 16,318 $74,107 $172,900
50588 Storm Lake Buena Vista County IA 13,346 $65,475 $178,800
51031 Le Mars Plymouth County IA 12,785 $74,978 $208,900
51301 Spencer Clay County IA 12,402 $61,175 $180,400
51401 Carroll Carroll County IA 12,113 $64,458 $192,100
51105 Sioux City Woodbury County IA 10,726 $46,940 $84,700
51250 Sioux Center Sioux County IA 9,887 $90,238 $286,000
51442 Denison Crawford County IA 9,586 $64,399 $146,200
51534 Glenwood Mills County IA 9,238 $89,023 $241,500
50595 Webster City Hamilton County IA 8,768 $71,182 $129,100
51360 Spirit Lake Dickinson County IA 8,561 $77,464 $256,000
50201 Nevada Story County IA 8,301 $81,989 $186,500
51041 Orange City Sioux County IA 7,173 $84,115 $253,600
50511 Algona Kossuth County IA 6,987 $60,256 $180,600
51334 Estherville Emmet County IA 6,827 $61,151 $104,900
51537 Harlan Shelby County IA 6,480 $62,353 $161,800
51012 Cherokee Cherokee County IA 6,313 $56,964 $127,900
51201 Sheldon Sioux County IA 6,226 $70,592 $182,500
50436 Forest City Winnebago County IA 5,760 $68,600 $164,300
51108 Sioux City Plymouth County IA 5,637 $78,333 $166,600
51054 Sergeant Bluff Woodbury County IA 5,596 $121,228 $292,600
50548 Humboldt Humboldt County IA 5,482 $71,043 $177,700
50441 Hampton Franklin County IA 5,363 $55,301 $124,000
51247 Rock Valley Sioux County IA 5,028 $73,451 $238,200
51351 Milford Dickinson County IA 4,990 $67,628 $256,100
51555 Missouri Valley Harrison County IA 4,881 $77,292 $180,900
50124 Huxley Story County IA 4,730 $122,974 $299,900
50156 Madrid Boone County IA 4,407 $97,298 $219,500
50248 Story City Story County IA 4,300 $88,333 $218,500
50536 Emmetsburg Palo Alto County IA 4,287 $62,404 $121,300
50013 Ames Story County IA 4,248 — —
51246 Rock Rapids Lyon County IA 4,075 $69,320 $232,900
50438 Garner Hancock County IA 4,006 $69,637 $176,500
50533 Eagle Grove Wright County IA 3,994 $61,635 $103,600
51510 Carter Lake Pottawattamie County IA 3,773 $75,037 $161,200
51109 Sioux City Plymouth County IA 3,731 $70,750 $120,400
51249 Sibley Osceola County IA 3,588 $63,542 $150,000
51023 Hawarden Sioux County IA 3,437 $74,205 $148,500
51040 Onawa Monona County IA 3,388 $60,642 $140,400
50525 Clarion Wright County IA 3,196 $59,875 $117,300
50579 Rockwell City Calhoun County IA 3,176 $69,464 $136,800
50421 Belmond Wright County IA 3,142 $66,184 $121,400
51546 Logan Harrison County IA 3,113 $82,860 $201,500
50212 Ogden Boone County IA 3,109 $74,865 $207,000
50450 Lake Mills Winnebago County IA 3,001 $76,522 $157,500
51239 Hull Sioux County IA 2,947 $82,353 $231,300
51050 Remsen Plymouth County IA 2,909 $101,691 $219,100
50025 Audubon Audubon County IA 2,893 $51,758 $103,500
51002 Alta Buena Vista County IA 2,866 $69,375 $145,300
51039 Moville Woodbury County IA 2,831 $105,994 $226,900
51445 Ida Grove Ida County IA 2,464 $66,250 $117,500
50563 Manson Calhoun County IA 2,461 $78,261 $156,500
50423 Britt Hancock County IA 2,401 $65,966 $110,200
50276 Woodward Boone County IA 2,380 $92,682 $243,400
51455 Manning Carroll County IA 2,303 $75,455 $125,400
51001 Akron Plymouth County IA 2,292 $67,639 $177,700
50583 Sac City Sac County IA 2,286 $63,967 $129,200
51346 Hartley O'Brien County IA 2,211 $60,179 $125,800
51579 Woodbine Harrison County IA 2,205 $70,833 $182,300
50247 State Center Marshall County IA 2,198 $90,179 $167,200
50574 Pocahontas Pocahontas County IA 2,103 $57,589 $104,700
51241 Larchwood Lyon County IA 2,052 $89,214 $270,100
51024 Hinton Plymouth County IA 2,048 $108,892 $317,100
51028 Kingsley Plymouth County IA 2,047 $74,655 $195,000
51529 Dunlap Harrison County IA 2,026 $66,042 $139,400
51449 Lake City Calhoun County IA 1,951 $66,750 $119,300
50012 Ames Story County IA 1,950 — —
51521 Avoca Pottawattamie County IA 1,935 $71,715 $173,100
51560 Oakland Pottawattamie County IA 1,902 $71,442 $160,300
51559 Bentley Pottawattamie County IA 1,896 $74,116 $190,700
51576 Underwood Pottawattamie County IA 1,890 $107,679 $291,500
50058 Coon Rapids Guthrie County IA 1,885 $72,750 $147,500
51025 Holstein Ida County IA 1,881 $63,375 $118,100
51551 Malvern Mills County IA 1,877 $82,218 $184,300
51034 Mapleton Monona County IA 1,844 $65,489 $119,100
51240 Inwood Lyon County IA 1,842 $80,948 $193,600
51003 Alton Sioux County IA 1,815 $85,909 $226,300
51575 Treynor Pottawattamie County IA 1,707 $117,803 $279,400
50236 Roland Story County IA 1,699 $86,793 $185,900
50046 Cambridge Story County IA 1,696 $91,944 $225,000
51526 Crescent Pottawattamie County IA 1,694 $99,625 $331,900
51035 Marcus Cherokee County IA 1,664 $75,673 $182,900
51248 Sanborn O'Brien County IA 1,643 $60,809 $154,400
50554 Laurens Pocahontas County IA 1,639 $63,618 $85,600
51577 Walnut Pottawattamie County IA 1,637 $67,928 $112,700
51030 Lawton Woodbury County IA 1,630 $78,750 $267,600
51443 Glidden Carroll County IA 1,623 $78,472 $181,500
50475 Sheffield Franklin County IA 1,598 $78,333 $155,600
50424 Buffalo Center Winnebago County IA 1,590 $58,125 $109,200
51237 George Lyon County IA 1,577 $62,727 $131,400
51652 Sidney Fremont County IA 1,551 $81,600 $140,900

Frequently asked questions

Where is congressional district IA-4?

District IA-4 is a U.S. House district in Iowa. On US5 it is linked to ZIP codes covering about 793,440 combined ZIP-area residents across 351 codes. Browse the ZIP table on this page for cities and counties.

How many ZIP codes are in district IA-4?

US5 currently lists 351 indexable ZIP codes for congressional district IA-4. Counts can change as geography publishes update.

What is the average income in district IA-4?

The average of ZIP median household incomes in IA-4 is about $72,623 (about 3% below the U.S. median ($75,149)). Individual neighborhoods vary — sort the ZIP table by income to compare.

Is a congressional district the same as a ZIP code or county?

No. House districts are drawn for representation and often cut across cities and counties. ZIP codes are postal geography. US5 links each published ZIP to a primary district code so you can browse demographics by seat.

How does US5 map ZIPs to district IA-4?

US5 joins each published ZIP profile to a congressional district code from the spatial dictionary. This page lists indexable ZIPs with that code so you can move from the district overview into local demographics.

What cities are in district IA-4?

Larger population clusters on US5 for IA-4 include Sioux City, IA, Council Bluffs, IA, Ames, IA, Marshalltown, IA, and Fort Dodge, IA. Open linked ZIP pages for neighborhood-level demographics.