Des Moines / Sioux City
Sioux City has 86,101 residents (give or take 29) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US1973335, checked 2026-10-19), about 1,456 people per square mile.
Sioux City is about 156 miles from the Census center point for Des Moines in a straight line and covers 59.153 square miles of land (Census 2024 Gazetteer internal points and land area, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/, checked 2026-10-19).
The quote form takes a ZIP code; for Sioux City that is 51101, 51103, 51104, 51105, 51106, 51111 (Census 2020 ZCTA to county subdivision and ZCTA to place relationship files, ZIP areas at least 20% inside the town, https://www2.census.gov/geo/docs/maps-data/data/rel2020/zcta520/tab20_zcta520_cousub20_natl.txt and https://www2.census.gov/geo/docs/maps-data/data/rel2020/zcta520/tab20_zcta520_place20_natl.txt, checked 2026-10-19).
Of the 32,926 occupied homes in Sioux City, 65% heat with natural gas, 0% with heating oil, 32% with electricity and 2% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US1973335, checked 2026-10-19).
Gas heats 65% of Sioux City against electricity at 32%, so most quotes here are a partial-home system that carries the shoulder seasons and the summer while the gas furnace handles the coldest nights, or a whole-home system when the house is ready for it.
Sioux City has about the Woodbury County oil share of 1% and the same 32% electric share (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US19193, checked 2026-10-19).
Sioux City has 35,001 housing units, 32% built before 1940 and 78% before 1980, with 9% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US1973335, checked 2026-10-19).
Sioux City has 3 points fewer homes built after 2000 than the county's 12% (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US19193, checked 2026-10-19).
The median Sioux City home was built in 1957 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US1973335, checked 2026-10-19) and the median home has 5.6 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US1973335, checked 2026-10-19).
70% of Sioux City homes are single-family detached, 6% are in two- to four-unit buildings and 16% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US1973335, checked 2026-10-19).
With 70% detached houses and 6% in small multi-family buildings, a Sioux City quote is usually one or two outdoor units with ducted or ductless heads sized room by room. With 35% of Sioux City homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US1973335, checked 2026-10-19), the landlord signs the quote in many of them.
32% of Sioux City homes were built before 1940 and 78% before 1980 (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US1973335, checked 2026-10-19), so insulation is the first sizing question: an older home leaks more heat per square foot, and the installer runs a room-by-room heat-loss calculation to size the system for what the walls and windows actually hold in, not just the floor plan.
MidAmerican Energy lists Sioux City among the Iowa communities it serves for electricity (MidAmerican Energy community list, electric communities, https://www.midamericanenergy.com/territory-communitylist, checked 2026-10-19).
MidAmerican 2026 Instant Discount air source heat pump, run by MidAmerican Energy, is a live program for Iowa addresses and covers qualifying equipment at $1,200 per system (registry row 31 verified 2026-10-14, https://www.midamericanenergy.com/home-discounts-and-rebates, checked 2026-10-16); confirm eligibility for the Sioux City address before counting it. With 32% of Sioux City homes already on electric heat and 67% on gas, oil or propane, the row that applies depends on the name on the electric bill and the fuel coming out.
Median household income in Sioux City is $68,906 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US1973335, checked 2026-10-19); many state and utility heat pump rebate programs set higher incentive tiers for income-qualifying households, so the household income on the application, not the town median, decides which level applies.
Heating design temperature: -4F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Woodbury County row, 99% heating, PDF pages 37 to 41 of 141 (Revised 11/11/2020), https://www.energystar.gov/sites/default/files/Design%20Temperature%20Limit%20Reference%20Guide%20(2019%20Ed)%20-%20ENERGY%20STAR%20Single-Family%20New%20Homes_Rev11.pdf, fetched 2026-10-19, 99%.
That -4F figure is the Woodbury County cold-day number a Sioux City heat pump is sized against, so ask the installer to show the system's heating output at -4F, not at the milder rating-label temperature.
Ask whether the quote is whole-home or partial-home, because with 65% of Sioux City on gas and 32% already electric the two paths carry different rebate figures and different sizing.
Ask for the heat-loss calculation room by room; a Sioux City house from before 1940 (32% of the 35,001 units) rarely matches a square-footage rule of thumb.
The form on this page is the follow-up for Sioux City. The public number is the number the contractor quotes from.
No local contractor is named on this door for Sioux City yet. A request from this page goes to the first licensed shop that takes the door.