Commercial Real Estate Market in Allendale, IL
Updated monthly: sale, lease, property records, location trend, and more… · Last update: August 31
Market Trends
Allendale, IL spans 38.2 square miles in Wabash County, Illinois. Figures below refresh monthly; last updated 31 August 2026.
Office
Office vacancy in Allendale, IL runs 21.3% across the Midwest region in 2025, up from 13.7% in 2019.
Vacancy Rate % in Midwest region
Retail
Retail vacancy in Allendale, IL runs 6.3% across the Midwest region in 2025, down from 8% in 2020.
Vacancy Rate % in Midwest region
Industrial
Industrial vacancy in Allendale, IL runs 4.9% across the Midwest region in 2025, up from 4.4% in 2019. Nearly 1.6x the 2022 low of 3.1%.
Vacancy Rate % in Midwest region
Multifamily
Multifamily vacancy in Allendale, IL runs 8% across the Midwest region in 2025, up from 6.5% in 2022.
Vacancy Rate % in Midwest region
Market overview
Demographics & Economy
Allendale, IL has 996 residents in 467 households. Density runs 26 people per square mile. Median household income here is $81,065 and median gross rent $608 a month.
996
Population
467
Households
2.1
Avg Household Size
40
Median Age
19%
College-Educated
93%
High-School Grad
38.2 sq mi
ZIP Area
26
Density / Sq Mi
$81,065
Median Household Income
$41,607
Median Earnings
$608
Median Rent
$114,700
Median Home Value
Tools
Nearby Markets
| Market | Average Sale Price, $/SF | Average Lease Price, $/SF/Yr |
|---|---|---|
| Patton | — | — |
| Sand Barrens | — | — |
| Decker | — | — |
| Friendsville | — | — |
Methodology & data sources
- Vacancy rates
- Published per-sector market series, taken at the metro level where one exists and otherwise at the Census-region level — a chart reading "in <region> region" is a regional number, not this city's.
- Refresh
- The monthly aggregates close at the end of the previous month, so 31 August 2026 — not today — is the honest last update.
- Known limitations
- office vacancy is reported at Midwest region level, retail vacancy is reported at Midwest region level and industrial vacancy is reported at Midwest region level.
- Coverage
- Metrics below the 10-observation threshold fall back one geographic level. The geography used is named on each figure.
Compiled by the Realmo Data team · reviewed 31 August 2026 · report a data issue
