PEORIA COUNTY
ZONING REQUIREMENTS
Any land division must conform to the
zoning requirements set forth in the Peoria
County Unified Development Ordinance.
The following provisions must be met in
accordance with the ordinance. We advise
you to contact the Department of Planning
and Zoning for any regulation changes to
the ordinance.
Front Road Setback Requirements
Note: For square corner lots, the “road” setback shall
be applied to both the front yard where the main door is
located and the side yard facing the right-of-way; the
other yards shall be considered the “side” yards.
Residential

Lot Size Requirements by Zoning District
State Roads
Non-Residential
75 feet from right of
way or 135 feet from
center of right of
way, whichever is
greater

Collector/Township: “R-R”, “R-1”, “R-2”,
& “R-3”
Residential
Non-Residential

75 feet from right of
way or 160 feet from
center of right of
way, whichever is
greater
40 feet from right of
way or 70 feet from
center of right of
way, whichever is
greater
Residential
Zoning District
Minimum lot size (acres)
County Highway- Primary
Residential
Non-Residential

A-1
Agriculture Preservation
40
A-2
Agriculture
25
R-R
Rural Residential
R-1
Low Density Residential
R-2
Medium Density Residential
R-3
High Density Residential
1
1/2

100 feet from right of
way or 140 feet from
center of right of
way, whichever is
greater
County Highway- Non-Primary
Residential
Non-Residential

1/4 if on public sewer
1/2 if on private sewer; add
4000 sq.ft per additional unit
6000 sq. ft on public sewer
1/2 acre on private sewer;
add 3000 sq. ft per unit
75 feet from right of
way or 115 feet from
center of right of
way, whichever is
greater
40 feet from right of
way or 100 feet from
center of right of
way, whichever is
greater

65 feet from right of
way or 125 feet from
center of right of
way, whichever is
greater
Collector/Township: “A-1” & “A-2”
Zoning Districts
Residential
Non-Residential

40 feet from right of
way or 70 feet from
center of right of
way, whichever is
greater


65 feet from right of
way or 95 feet from
center of right of
way, whichever is
greater

75 feet from right of
way or 110 feet from
center of right of way
whichever is greater.
Local Street
Non-Residential
25 feet from right of
way

50 feet from right of
way
Side & Rear Yard Setback Requirements
Side
“A-1” & “A-2” Zoning Districts
Rear

Principal Structure:
30 feet from the
property line

Principal Structure:
30 feet from the
property line

Accessory Structure:
15 feet from the
property line if the
structure is less than
2,000 sq. feet and 30
feet from the property
line when the
structure is greater
than 2,000 sq. feet.

Accessory Structure:
15 feet from the
property line if the
structure is less than
2,000 sq. feet and 30
feet from the property
line when the
structure is greater
than 2,000 sq. feet.
Side & Rear Yard Setback Requirements
R-R Rural Residential Zoning District
Side
Rear
Side



Principal Structure:
1) Septic: not less
than 30 ft. from
the property line.
2) Sewer: not less
than 15 ft. from
the property line.
Accessory Structure:
15 feet from the
property line if the
structure is less than
2,000 sq. feet and 30
feet from the property
line when the structure
is greater than 2,000
square feet.
Side





Principal Structure:
not less than 30 ft.
from the property
line.
Accessory Structure:
15 feet from the
property line if the
structure is less than
2,000 sq. feet and 30
feet from the
property line when
the structure is
greater than 2,000
sq feet.
R-1 Low Density Residential
Rear
Principal Structure:
not less than 15 feet
from property line.
Accessory structure:
not less than 15 feet
from property line.
Side



Principal Structure:
not less than 25 feet
from property line.
Accessory Structure:
not less than 15 feet
from property line.
R-2 Medium Density Residential
Rear
Principal structure: not
less than 10% of lot
width at building line.
Maximum of 15 feet
and minimum of 5 feet
from property line.
Accessory structure: 5
feet from the property
line. * may be reduced
to 3 ft. provided the
accessory structure is
in the rear 1/3 of lot.


Principal structure:
not less than 15 feet
from the property
line.
Accessory structure:
5 feet from the rear
property line.

R-3 High Density Residential
Rear
Principal Structure:
1) Single and 2 family
dwellings,
excepting
duplexes: not less
than 10% of width
of lot at building
line. Maximum of
15 feet, minimum
of 5 feet from the
property line.
2) Duplexes:
-Interior side
(common wall):
zero lot line,
provided that the
required minimum
lot width and
minimum lot area
are met.
-Exterior side: not
less than 10% of
the lot width at the
building line.
Maximum of 15
feet, minimum of 5
feet from the
property line.
3) Other uses: not
less than 20 feet
from property line.
Accessory Structure:
not less than 10% of
width of lot at building
line. Maximum of 15
feet and minimum of 5
feet from property line.

Principal Structure:
not less than 20
feet from the
property line.

Accessory
structure: not less
than 5 feet from the
property line.
Revised January 2011
A GUIDE TO PEORIA COUNTY
ZONING REQUIREMENTS
PEORIA COUNTY
DEPARTMENT OF PLANNING & ZONING
Matthew G. Wahl, Director
Peoria County Courthouse
324 Main St., Rm 301
Peoria, IL 61602
Ph: (309) 672-6915
Fax: (309) 672-6075
http://www.peoriacounty.org
Office Hours
Monday-Friday: 8:30 to 4:30 p.m.