Cities / Illinois / Macon County / Decatur
Decatur cityscape
City housing brief · Incorporated place

Decatur, IL

City evidence stays city-level. County, metro and national records appear separately to explain the wider market without changing the city figures.

City gross yield11.4%ZORI × 12 ÷ ZHVI · before costs
City market snapshot

Four figures that frame the city

Typical home value
$108k
▲ 7.3% year over year
Zillow ZHVI · 2026-06
Observed market rent
$1,019
▼ 0.4% year over year
Zillow ZORI · 2026-06
Entry affordability
2.1x
home value ÷ household income
Zillow + Census ACS
Population
69,815
▼ 3.5% between ACS vintages
ACS 2024 5-year
Decision brief

What the city-level evidence says

01Decision frame

Decatur's current Zillow ZHVI typical home value is $107,596 and its ZORI typical observed market rent is $1,019 per month. Their implied gross yield is 11.4%, calculated as annual ZORI divided by ZHVI and before every operating and financing cost. ZHVI equals 2.1x ACS median household income, while annualized ZORI equals 23.7% of that income. Those citywide affordability markers support screening, not a property cash-flow conclusion.

02Housing stock

City housing stock totals 36,018 units, with a 14.2% citywide vacancy rate; renters occupy 37.1% of occupied units. This establishes meaningful rental tenure but cannot establish that a particular unit will lease promptly. ACS reports $845 as median gross rent, including contract rent and selected utilities, and a $99,600 owner-reported median home value for surveyed occupied housing. Those ACS measures differ in definition and period from Zillow's market rent and typical value and should not be blended.

03City depth

The city rent-burden share is 41.9%. Single-family units are 76.4% of all housing units, while units in large multifamily structures are 8.4%. Of all city vacancies, 31.3% are classified as for rent, a reason code that does not measure available investment inventory. Population was 3.5% lower across the overlapping ACS vintages; this is not an annual rate and may reflect boundary changes. Median household income is $51,592, with a 19.4% poverty rate and an 8.3% unemployment rate. These survey indicators describe housing form and demand constraints; they neither prove leasing velocity nor establish causal relationships.

04Wider context

At the county scope, Macon County reports a 2.12% property-tax rate, a 31-day median marketing time, and a 19.8% price-reduced share of active listings; county evidence frames carrying cost and liquidity but does not measure Decatur. At the metro scope, the Decatur metro has jobs down 0.5%, 1.7 months of supply and a 35.3% price-drop share; metro conditions cover the broader market, not the city alone. At the national scope, the national Freddie Mac 30-year mortgage rate is 6.58%, a benchmark rather than a city or property quote.

05Limits & next checks

The simple yield omits taxes, insurance, repairs, capital work, management, utilities, vacancy, transaction costs and debt service; cross-source timing also limits direct comparison. Before acting, obtain an address-specific rent roll or lease, current rent comparables, inspection and systems history, utility responsibility, insurance and hazard quotes, title and zoning review, and a lender quote. Reconcile the parcel's actual assessment and tax bill to the county tax rate, test realistic downtime and exit costs, and avoid treating survey vacancy or broader-market liquidity as a property forecast.

Housing system

Market movement and the stock underneath it

Five-year path

Price and rent, rebased to 100

ZHVI +31.9%ZORI +17.7%
13211395202120222023202420252026
Each series starts at 100 so their direction can be compared without pretending that a home value and a monthly rent share the same unit.
Housing stock

Tenure and vacancy

ACS
37.1%RENTER
Owner occupied62.9%
Renter occupied37.1%
Vacant units14.2%

Median structure year 1960

Tenure uses occupied units; vacancy uses all housing units.
Measurement matrix

Two sources, two different questions

SourceHome valueMonthly rent
Zillow market index$107.6K$1K
ACS occupied housing$99.6K$845
Zillow measures current market indexes. ACS reports surveyed owner value and gross rent for occupied housing. The rows are context, not interchangeable estimates.
Direct city depth

Households and housing form behind the medians

Median household income$52k

Annual ACS household measure.

Rent-to-income screen23.7%

Annual ZORI divided by ACS median income.

ACS rent burden41.9%

Renters paying at least 30% of household income toward gross rent.

Average household size2.17

People per occupied housing unit.

Single-family stock76.4%

Detached and attached one-unit structures.

Large multifamily stock8.4%

Housing in structures with 20 or more units.

Vacant and for rent31.3%

Share of vacant units listed by ACS as for rent, not a market vacancy rate.

Unemployment8.3%

Share of the civilian labor force.

Poverty19.4%

ACS population for whom poverty status is determined.

These are citywide context measures. They cannot tell you the rent, vacancy, expenses or tenant demand for a particular neighborhood or property.
Closest market alternatives

Three useful contrasts, not a synthetic winner

The peer set broadens the decision without mixing geographies. Price, rent and housing characteristics remain city-level for every place.

Comparable market profile

Entry price, rent and gross yield

Decatur, ILPeoria, ILSpringfield, ILAlbany, GA
Typical home valueZillow ZHVIDecatur$107.6KPeoria$137.4KSpringfield$173.2KAlbany$135KObserved market rentZillow ZORI / monthDecatur$1KPeoria$1.2KSpringfield$1.2KAlbany$936.9Gross yieldZORI × 12 ÷ ZHVIDecatur11.4%Peoria10.8%Springfield8.1%Albany8.3%
Bars begin at zero within each measure. Gross yield is a screening ratio before financing, taxes, insurance, vacancy, maintenance or management costs.
Same state01

Peoria, IL

Compared with Decatur, typical home value is $30k higher, monthly rent is $216 higher, and gross yield is 0.6 percentage points lower.

Rent burden 30%+
50.0%
Renter share
42.5%
One-unit stock
68.0%
20+ unit stock
11.1%
Same state02

Springfield, IL

Compared with Decatur, typical home value is $66k higher, monthly rent is $157 higher, and gross yield is 3.2 percentage points lower.

Rent burden 30%+
47.9%
Renter share
35.7%
One-unit stock
73.0%
20+ unit stock
7.1%
Closest data profile03

Albany, GA

Compared with Decatur, typical home value is $27k higher, monthly rent is $82 lower, and gross yield is 3.0 percentage points lower.

Rent burden 30%+
49.4%
Renter share
62.3%
One-unit stock
59.4%
20+ unit stock
2.5%

These are analytical alternatives, not recommendations. The structural measures come from Census ACS; price and rent use the Zillow releases shown on each card and in the source ledger below.

Wider market context

What surrounds the city without being mistaken for it

The layers below answer different questions. County records describe listing, migration, financing and hazard conditions around the city; metro records describe jobs, supply and permits; the mortgage rate is national.

Same measure, wider boundary

City marker against intersecting counties

CityCounty range
Typical home value$127.8K$127.8K$107.6KObserved market rent$1K$1K$1K
Both levels use Zillow indexes, but the county records cover land and housing outside the city. The comparison supplies context; it does not replace the city value.
COUNTY LAYER

The intersecting county

This boundary extends beyond the city and is shown only as context.

2026-06
Active listings
180
Listing DOM
31 days
FHFA one-year
▲ 5.1%
Net migration
-272
Investor share
16.9%
Effective property tax
2.12%
Top hazard
inland flooding
Expected loss ratio
0.14%
METRO LAYER

Decatur, IL

Open metro analysis →
Job growth▼ 0.5%12m to 2026-06
Permitted units322026 YTD through M06
Permits / 1,0000.3broader metro population
Months of supply1.72026-05-01
Median DOM29 daysRedfin metro tracker
Price drops35.3%Redfin metro tracker
Wider-context figures are not inputs to the city gross yield and are never used to fill a missing city price, rent or ACS measure.
What can break the thesis

Three checks before using the city averages

  1. 01

    The city Zillow gross yield excludes operating and financing costs and is not net income.

  2. 02

    Citywide ACS vacancy, burden and structure shares cannot establish a target property's availability, rent or lease-up.

  3. 03

    County tax and listing context, metro labor and resale context, and the national mortgage rate cannot replace parcel and borrower evidence.

Questions answered

Quick reading guide

Is the Zillow gross yield a return forecast?

No. It annualizes city ZORI and divides it by city ZHVI before every operating and financing cost; it is neither property net operating income nor a forecast.

Can ACS rent and vacancy set an asking rent?

No. City ACS gross rent includes selected utilities for surveyed occupied housing, and citywide vacancy does not predict a specific unit's lease-up. Use property rent comparables and verified utility terms.

How should wider context enter underwriting?

Use county taxes and listings, metro jobs and resale conditions, and the national mortgage rate only as scoped benchmarks; verify parcel taxes, property marketability and borrower financing directly.

Sources and geography

What belongs to this city page

Census recognizes this as Decatur city. The place intersects Macon County.