St. Louis / Hillsboro
Hillsboro has 3,500 residents (give or take 31) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US2932248, checked 2026-10-19), about 911 people per square mile.
Hillsboro is about 33 miles from the Census center point for St. Louis in a straight line and covers 3.842 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).
Of the 1,100 occupied homes in Hillsboro, 41% heat with natural gas, 0% with heating oil, 55% with electricity and 4% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US2932248, checked 2026-10-19).
Electricity already heats 55% of Hillsboro homes, ahead of gas at 41%, and a home on electric baseboard sees the biggest bill change from a heat pump because it replaces resistance heat one for one.
Hillsboro has about the Jefferson County oil share of 0% and 3 points less electric heat than the county's 58% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US29099, checked 2026-10-19).
Hillsboro has 1,183 housing units, 1% built before 1940 and 37% before 1980, with 46% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US2932248, checked 2026-10-19).
Hillsboro has 17 points more homes built after 2000 than the county's 29% (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US29099, checked 2026-10-19).
The median Hillsboro home was built in 1996 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US2932248, checked 2026-10-19) and the median home has 5.5 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US2932248, checked 2026-10-19).
76% of Hillsboro homes are single-family detached, 13% are in two- to four-unit buildings and 5% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US2932248, checked 2026-10-19).
With 76% detached houses and 13% in small multi-family buildings, a Hillsboro quote is usually one or two outdoor units with ducted or ductless heads sized room by room. With 29% of Hillsboro homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US2932248, checked 2026-10-19), the landlord signs the quote in many of them.
46% of Hillsboro housing was built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US2932248, checked 2026-10-19), and homes that recent usually meet the insulation codes in place at the time, so a heat pump sized to the floor plan lands closer to the real load than it would in an older neighborhood.
No electric utility is on file for Hillsboro on this door yet, so this page does not name one; the name on the bill decides which rebate path applies.
Median household income in Hillsboro is $77,500 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US2932248, 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: 2F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Jefferson County row, 99% heating, PDF pages 68 to 73 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 2F figure is the Jefferson County cold-day number a Hillsboro heat pump is sized against, so ask the installer to show the system's heating output at 2F, not at the milder rating-label temperature.
Ask for the heat-loss calculation room by room; the median Hillsboro home has 5.5 rooms and was built around 1996, and the count of heads and the tonnage follow the rooms and the insulation, not the square footage.
The form on this page is the follow-up for Hillsboro. The public number is the number the contractor quotes from.
No local contractor is named on this door for Hillsboro yet. A request from this page goes to the first licensed shop that takes the door.