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Jefferson County, Illinois

Single-family vs. condo trends, market pressure signals, and 5-year price history. Source: Redfin.

Median Sale Price
$134,000
+16.5% YoY
Active Inventory
75
Days on Market
66 days
Price Drops
26.7%

Single-Family vs. Condo

Source: Redfin (property-type breakdown)
Single-Family Median
$134,000
+35.4% YoY
Condo / Co-op Median
$184,000
SFR vs. Condo YoY Gap
-46.8%
condos outperforming SFR
DOM: SFR vs. Condo
66d / 2d
SFR / Condo

Buyer vs. Seller Market Indicators

Latest month — Redfin
Months of Supply
3.0 mo
Balanced

Inventory ÷ monthly sales. Below 3 = strong seller market; 3-6 balanced; above 6 = buyer market.

Sale-to-List Ratio
96.5%
Below asking

Median closing price ÷ original list price. Above 100% = homes routinely closing above asking.

% Sold Above List
24%
Mixed

Share of closed sales priced above asking. The single cleanest read on bidder competition.

What does your sqft target cost in Jefferson County, Illinois?

$113/sqft median (Redfin)
+$0 adj
+$0 adj
optional
Estimated price
$225,049
Above median range (+68% vs median)
Region median
$134,000
all homes
Price-tier reverse lookup — what sqft does each price band buy?
$600,000
≈ 5,332 sqft
$1,200,000
≈ 10,664 sqft
$2,000,000
≈ 17,774 sqft
$5,000,000
≈ 44,435 sqft

Estimate = (median $/sqft × your sqft) + bed/bath/lot adjustments. Bed and bath adjustments use Appraisal Institute / Fannie Mae standard rules of thumb (~$15K/extra bedroom, ~$20K/extra bathroom vs. a 3bd/2ba baseline; half-bath = half adj). Lot premium is a $1.50/sqft heuristic beyond a 6,000 sqft baseline — accuracy varies sharply by urban infill vs. acreage market. Quality, condition, year built, and HOA are not modeled here. For a deeper county-level hedonic AVM, see AVM Lite.

Rent + invest vs. buy + own — backtested

15-yr rolling history · S&P 500
Property type:
Upfront capital committed (both paths): $31K = 20% down + 3% closing on a $134K home
BUY + OWN
Median ending wealth $118K $72K real
Net gain on $31K upfront: $87K
Range: $118K → $118K
Wealth = home value (appreciated at 3%/yr) − remaining mortgage − 6% selling cost. Gain = wealth − upfront. Leveraged appreciation on full $134K asset comes from the 20% down.
RENT + INVEST
Median ending portfolio $86K $63K real
Net gain on $31K contributed: $55K
Range: $18K → $354K
Same upfront cash + each year's (own − rent) surplus invested in S&P 500 at actual annual returns. Median renter contributed $31K total.
Median wealth delta: $32K in favor of BUY + OWN
What if you'd started in a recent year? (most-recent 15yr window: 2011–2025)
WindowBuy wealthBuy gainRent wealthRent gainWealth delta
2011–2025$118K$87K$167K$136K$49K rent
2010–2024$118K$87K$172K$141K$55K rent
2009–2023$118K$87K$179K$148K$61K rent
2008–2022$118K$87K$73K$42K$44K buy
2007–2021$118K$87K$91K$60K$27K buy
2006–2020$118K$87K$82K$51K$36K buy
2005–2019$118K$87K$69K$38K$48K buy
2004–2018$118K$87K$58K$27K$60K buy

Educational tool, not investment or real-estate advice. Past performance does not guarantee future results. Backtests use actual annual total returns including dividends from S&P 500 (Damodaran (NYU Stern) annual total return (with dividends), 1957-present.).

Buyer model: 30-yr fixed mortgage, P&I + property tax + insurance + maintenance (1% of value/yr) + HOA. Selling cost = 6%. Investor model: down payment + annual cashflow surplus invested in the chosen index at that calendar year's actual return.

Tax model: pre-tax comparison. Toggle "after-tax mode" to apply MID, SALT, LTCG, and the Sec 121 capital-gains exclusion.

This calculator does not adjust for: PMI (assumed 20%+ down), differential transaction costs by state, lifestyle factors (commute, schools, kids), illiquidity / forced-sale risk, or insurance availability constraints (e.g., FL/CA wildfire). Consult a fiduciary advisor and tax professional before acting on any of this.

Market Pressure Signals

Derived from Redfin trend
Inventory vs. Long-Term Avg
+1.7%
roughly balanced
DOM vs. 24-Mo Avg
+11.5%
currently 66 days
Long-Term Avg Inventory
74
Long-Term Avg DOM
59 days

Mortgage & Price Stress

State HPI + national delinquency
State HPI YoY
+6.4%
positive — appreciating
State HPI vs. Peak
0.0%
at or near peak peak 2025-10-01
National Mortgage Delinquency
1.89%
benchmark — 2026-01-01 county-grain delinquency requires paid data

State-grain HPI YoY + drawdown from peak is the cleanest free price-stress proxy. The national delinquency rate gives the macro mortgage-stress backdrop. True county-level mortgage delinquency lives in paid datasets (MBA NDS, CoreLogic LP).

Value Ratios

Median home price ÷ county median income
Value / Income
2.2×
bargain
Median Household Income
$61,102
Census ACS B19013

Historically affordable markets sit at 3–4× income; over 5× is stretched, over 6× is severely overvalued. Lower ratios point to bargain opportunities.

Housing Stock & Owners

Census ACS 5-year (B19013, B01003, B25002, B25003, B25034, B25007)
Population
36,808
total residents
Total Housing Units
16,650
all units, occupied + vacant
Vacancy Rate
11.1%
elevated
Homeownership Rate
71.8%
of occupied units owner-occupied
Boomer Owners (65+)
26.2%
of homeowner households
Millennial / Gen-X Owners (35-54)
8.2%
of homeowner households
Pre-1949 Housing Stock
18.1%
structures built before 1949

When boomer-owner share is high, expect more inventory hitting the market over the next decade as homes transition. High vacancy + high old-stock often signals deferred-maintenance markets where buyers can negotiate.

Net Migration (IRS Tax Returns)

IRS Statistics of Income — Migration Data
Net Migration
-45
losing people (2022–2023)
Inbound Returns
290
519 people moved in
Outbound Returns
306
564 people moved out
Net Returns
-16
household-filer basis

Top 5 Origins (where movers came from)

  1. Marion, Illinois — 83 returns
  2. Franklin, Illinois — 75 returns
  3. Williamson, Illinois — 31 returns
  4. Wayne, Illinois — 27 returns
  5. Washington, Illinois — 26 returns

Top 5 Destinations (where movers went)

  1. Marion, Illinois — 96 returns
  2. Franklin, Illinois — 56 returns
  3. Williamson, Illinois — 40 returns
  4. Washington, Illinois — 35 returns
  5. Wayne, Illinois — 33 returns

IRS Statistics of Income tracks county-to-county migration via tax-return change-of-address. Net migration uses the exemption count (a proxy for people, including dependents). True net flow can lag by 1–2 years vs. real-time movements.

Who's Moving In (Census ACS)

Source: Census ACS B07001 (5-year)
Inbound Movers (1 yr)
1,625
4.47% of pop. — moved here from outside the county
From Other States
498
1.37% of pop. — interstate inbound
From Abroad
21
moved into the county from outside the U.S.
Same House 1 Year Ago
89%
stable residents

Census ACS asks where people lived 1 year ago, so this counts inbound movers but does not show outbound — true net migration would require IRS SOI parsing.

Trends

Up to 5 years of monthly data

Median Sale Price

Trailing 12 months

Active Inventory

Trailing 12 months

Days on Market

Trailing 12 months

Looking for state-level data? See Illinois statewide stats →

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