Counties / Illinois / Marion County

Marion County, IL

FIPS 17121 · population 37,000 · outside every metro area

$122k
Zillow home value · 2026-06
The numbers

What this county costs and earns

Everything here joins on the county FIPS code, so each figure comes from the agency that publishes it with no name matching in between.

Zillow home value
$122k
▲ 6.8% year over year
Zillow ZHVI · direct
ACS median gross rent
$794
occupied-unit survey; not current asking rent
Census ACS · surveyed
Gross yield
n/a
gross yield cannot be computed without measured market rent
requires both measured price and measured rent
HUD 2-bed standard
$916
the Section 8 payment standard
HUD Fair Market Rent · direct
Independent price check

Do two methods point the same way?

Zillow estimates a current home value. FHFA tracks repeat mortgage transactions. Their growth rates should be read side by side, not averaged.

Both annual signals move in the same direction
FHFA five-year cumulative+53.2%not annualized · through 2025
0%ZILLOW ZHVI2026-06+6.8%FHFA HPI2025+6.2%
Annual changes use different methods and may use different periods. The comparison checks direction and magnitude; it does not create a blended estimate. Zillow county ZHVI pulled 2026-07-26; FHFA annual county HPI pulled 2026-07-28.
Owner-reported value$103k
Surveyed gross rent$794
Rent burden 30%+42.6%
Median year built1973
Housing composition

Who occupies the stock—and what it is

ACS 2024 5-year
10.5%vacant
17,334estimated housing units
Occupied tenure25.4% renter
owner 74.6%renter 25.4%
Structure mix72.2% single-family
Single-family 72.2%20+ units 1.6%Mobile home 16.9%Other 9.3%
ACS estimates describe the standing housing stock and occupied tenure. They do not measure current listings, transaction prices or asking rents.

Survey source: Census ACS 5-year — county housing value, tenure and stock · ACS 2024 5-year · pulled 2026-07-30. These values describe different housing universes and are not combined into gross yield.

Annual average covered jobs12,326▼ 0.7% from the prior annual release
Covered establishments776annual average reporting locations
Average weekly wage$992▲ 4.8% from the prior annual release
Largest private supersectorEducation and health services26.8% of disclosed private covered jobs
Local labor base

Jobs, pay and private-sector concentration

2025
0%COVERED JOBS−0.7%WEEKLY WAGE+4.8%Education and health services26.8%
Annual QCEW counts cover jobs located at reporting establishments. The industry share uses disclosed private covered employment; it is not a resident-employment measure or a forecast.

Workplace source: BLS QCEW — county employment and wages · annual county employment and wages 2025 vs 2024 · pulled 2026-07-31. QCEW counts covered jobs located in the county, not employed residents or the metro score’s CES/LAUS series.

County brief

What the local evidence says

01Decision frame

Marion County’s decision tension is price appreciation set against carrying-cost, inland-flood and income-evidence uncertainty. Recent price movement is positive, but the record does not establish whether a specific property’s rent can absorb taxes, insurance and operations. This is a county for an investigator who can verify lease, flood and insurance facts at the parcel level; a buyer depending on assumed rental income or a headline value should be cautious.

02Housing economics

At Zillow’s county 2026-06 observation, the median home value was $122,048, up 6.84% year over year. FHFA’s separate 2025 annual repeat-transaction HPI rose 6.18% year over year and 53.23% cumulatively over five years. That index corroborates direction but is not a dollar home value; its vintage and method must not be averaged with Zillow’s change. The effective property-tax rate was 1.71%, with a $1,759 median annual tax. Market asking rent is not published, so gross yield cannot be computed. HUD’s $916 two-bedroom FMR is a payment standard, not a market-rent estimate.

03Demand & competition

County workplace evidence does not establish resident demand. QCEW recorded 12,326 annual average covered jobs in 2025, down 0.67% from the prior annual average, while the covered-worker average weekly wage was $992. Education and health services was the largest disclosed private supersector, not the whole economy. Tax-return migration showed a net loss of 27 households, and the inbound-versus-outbound average AGI gap was negative $2,214. Investors represented 5.90% of purchase mortgages to non-occupants, indicating limited measured investor participation, not total buyer competition or demand.

04Risk & next checks

Inland flood is the dominant hazard, and the modeled climate-loss ratio is 0.18% of building value per year. This is neither a property-specific loss estimate nor an insurance quote. Realtor.com MLS listing price, active listings, days on market and price-reduction data for 2026-06 are not published here, preventing a read on visible supply, marketing time and seller concessions; they would not establish closed-sale pricing by themselves. Obtain market-rent and lease comps, parcel tax bills, flood-zone and insurance quotes, condition, financing, and current listing and closed-sale evidence before underwriting.

Cities & communities

Where people live within Marion County

Census-recognized incorporated places and CDPs that intersect this county. The list does not pretend to include every neighborhood or informal community.

Population scale

Largest Census places

ACS 2024 5-year
Centralia city*11.9KSalem city7.2KCentral City village1.1KSandoval village1KOdin village972Wamac city*804Kinmundy city803Junction City village638
Bars use total place population, not a county-share estimate. An asterisk marks a place that crosses a county line.
Official directory

15 Census places

Population
  1. 01
    Centralia cityIncorporated place · spans 4 counties
    11,856
  2. 02
    Salem cityIncorporated place
    7,236
  3. 03
    Central City villageIncorporated place
    1,081
  4. 04
    Sandoval villageIncorporated place
    1,004
  5. 05
    Odin villageIncorporated place
    972
  6. 06
    Wamac cityIncorporated place · spans 3 counties
    804
  7. 07
    Kinmundy cityIncorporated place
    803
  8. 08
    Junction City villageIncorporated place
    638
  9. 09
    Farina villageIncorporated place · spans 2 counties
    570
  10. 10
    Iuka villageIncorporated place
    534
  11. 11
    Patoka villageIncorporated place
    498
  12. 12
    Alma villageIncorporated place
    285
Show 3 more places
  1. 13
    Kell villageIncorporated place
    145
  2. 14
    Walnut Hill villageIncorporated place
    127
  3. 15
    Vernon villageIncorporated place
    69

Population is the total place-wide ACS estimate, not an allocated county share. A place crossing a county line is labelled explicitly. Source: Census ACS 5-year — cities and communities · ACS 2024 5-year · pulled 2026-07-30.

Risk, demand and competition

The three things a price does not tell you

01
Risk & carrying costFEMA NRI + Census ACS
Dominant hazardinland flooding

0.180% of building value expected lost per year

Effective property tax1.71%

$1,759 median annual bill

02
DemandIRS SOI household flows
Net migration-27

733 in · 760 out

Arriving vs leaving income−$2,214

$42,865 arriving · $45,079 leaving

03
CompetitionHMDA financed purchases
Purchases by investors5.9%

17 of 288 mortgages

investorother financed
No rent index is published for this county.Zillow’s county rent series does not cover every county, and estimating one from a neighbouring county would be a guess wearing a number’s clothes. Everything above is measured here; no wider market is mapped for it either.
Bear case

What can break the county thesis

  1. Lease comps may show insufficient income after taxes, insurance and operating costs.
  2. Property-specific flood exposure, mitigation needs or insurance costs may exceed the county-level modeled ratio.
  3. Missing MLS supply and marketing data may conceal weaker liquidity or seller concessions.
Underwriting questions

Before pricing a property

Can gross yield be calculated from this record?

No. Market asking rent is not published, and HUD FMR cannot be substituted for market rent.

What does the QCEW employment measure represent?

Annual average covered jobs located at workplaces in Marion County, not resident employment or unemployment.

Which private sector is the largest disclosed supersector?

Education and health services.