Cook County Trends
The properties below represent a few of the many tax reductions from the our appeals and the grounds on which they were based.
All Townships
38 Locations
Northfield
North/Northwest
NORTH
Rising
Median market value
$754,855
of res. property
Change in Assessments
+28.1%
since the last reassessment
Properties Appealed
2025
15,648
2024
7,560
2023
9,030
0
5,000
10,000
15,000
20,000
Norwood Park
North/Northwest
NORTH
Rising
Median market value
$374,220
of res. property
Change in Assessments
+12.6%
since the last reassessment
Properties Appealed
2025
3,313
2024
2,079
2023
1,916
0
1,000
2,000
3,000
4,000
Oak Park
South/West
SOUTH
Rising
Median market value
$560,000
of res. property
Change in Assessments
+23.0%
since the last reassessment
Properties Appealed
2025
3,696
2024
4,245
2023
6,121
0
1,750
3,500
5,250
7,000
Orland
South/West
SOUTH
Rising
Median market value
$350,000
of res. property
Change in Assessments
+35.6%
since the last reassessment
Properties Appealed
2025
6,745
2024
8,743
2023
11,398
0
5,000
10,000
15,000
20,000
Palatine
North/Northwest
NORTH
Rising
Median market value
$420,000
of res. property
Change in Assessments
+27.9%
since the last reassessment
Properties Appealed
2025
14,028
2024
6,775
2023
7,482
0
5,000
10,000
15,000
20,000
Palos
South/West
SOUTH
Rising
Median market value
$400,000
of res. property
Change in Assessments
+20.0%
since the last reassessment
Properties Appealed
2025
3,261
2024
3,938
2023
5,925
0
1,500
3,000
4,500
6,000
Proviso
South/West
SOUTH
Rising
Median market value
$230,010
of res. property
Change in Assessments
+27.7%
since the last reassessment
Properties Appealed
2025
5,990
2024
6,931
2023
8,886
0
2,250
4,500
6,750
9,000
Rich
South/West
SOUTH
Rising
Median market value
$200,000
of res. property
Change in Assessments
+54.6%
since the last reassessment
Properties Appealed
2025
4,210
2024
4,857
2023
5,438
0
1,500
3,000
4,500
6,000
River Forest
South/West
SOUTH
Rising
Median market value
$917,620
of res. property
Change in Assessments
+29.7%
since the last reassessment
Properties Appealed
2025
1,181
2024
1,294
2023
1,950
0
500
1,000
1,500
2,000
Riverside
South/West
SOUTH
Rising
Median market value
$420,000
of res. property
Change in Assessments
+21.3%
since the last reassessment
Properties Appealed
2025
1,237
2024
1,496
2023
2,259
0
750
1,500
2,250
3,000
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Detailed Statistics
Key Numbers ?
23,614
Homes & Townhomes
95.6%
Homes with increased assessments
55yrs
Median home age
Size Metrics ?
2,577sqft.
Median building size
10,877sqft.
Median land size
Residential Property Types ?
2+ story homes 55.2%
1-story homes 26.1%
Townhomes / row houses 11.2%
Split-level homes 7.5%
% of Residential Properties Feature ?
Central AC
85.7%
Fireplaces
78%
Garage
96.5%
Full basement
50.9%
Key Numbers ?
NORTHFIELD
COOK COUNTY
Median market value
$754,855
$290,010
Change in Assessments
28.1%
25.2%
Homes & Townhomes
23,614
929,187
Homes with increased assessments
95.6%
91.9%
Median home age
55 yrs
69 yrs
Size Metrics ?
NORTHFIELD
COOK COUNTY
Median building size
2,577 sqft
1,374 sqft
Median land size
10,877 sqft
5,760 sqft
Residential Property Types ?
NORTHFIELD
COOK COUNTY
2+ story homes
55.2%
27.3%
1-story homes
26.1%
54.5%
Townhomes / row houses
11.2%
7.8%
Split-level homes
7.5%
10.4%
% of Residential Properties Feature ?
NORTHFIELD
COOK COUNTY
Central AC
85.7%
56.4%
Fireplaces
78%
32%
Garage
96.5%
88%
Full basement
50.9%
58.2%
Detailed Statistics
Key Numbers ?
7,901
Homes & Townhomes
90.9%
Homes with increased assessments
70yrs
Median home age
Size Metrics ?
1,290sqft.
Median building size
5,360sqft.
Median land size
Residential Property Types ?
2+ story homes 22%
1-story homes 70.4%
Townhomes / row houses 1.6%
Split-level homes 6%
% of Residential Properties Feature ?
Central AC
61.8%
Fireplaces
21.7%
Garage
93.4%
Full basement
75.8%
Key Numbers ?
NORWOOD PARK
COOK COUNTY
Median market value
$374,220
$290,010
Change in Assessments
12.6%
25.2%
Homes & Townhomes
7,901
929,187
Homes with increased assessments
90.9%
91.9%
Median home age
70 yrs
69 yrs
Size Metrics ?
NORWOOD PARK
COOK COUNTY
Median building size
1,290 sqft
1,374 sqft
Median land size
5,360 sqft
5,760 sqft
Residential Property Types ?
NORWOOD PARK
COOK COUNTY
2+ story homes
22%
27.3%
1-story homes
70.4%
54.5%
Townhomes / row houses
1.6%
7.8%
Split-level homes
6%
10.4%
% of Residential Properties Feature ?
NORWOOD PARK
COOK COUNTY
Central AC
61.8%
56.4%
Fireplaces
21.7%
32%
Garage
93.4%
88%
Full basement
75.8%
58.2%
Detailed Statistics
Key Numbers ?
10,315
Homes & Townhomes
95.8%
Homes with increased assessments
109yrs
Median home age
Size Metrics ?
1,809sqft.
Median building size
5,040sqft.
Median land size
Residential Property Types ?
2+ story homes 62.3%
1-story homes 31%
Townhomes / row houses 6.5%
Split-level homes 0.2%
% of Residential Properties Feature ?
Central AC
56%
Fireplaces
38.8%
Garage
92.2%
Full basement
87.9%
Key Numbers ?
OAK PARK
COOK COUNTY
Median market value
$560,000
$290,010
Change in Assessments
23%
25.2%
Homes & Townhomes
10,315
929,187
Homes with increased assessments
95.8%
91.9%
Median home age
109 yrs
69 yrs
Size Metrics ?
OAK PARK
COOK COUNTY
Median building size
1,809 sqft
1,374 sqft
Median land size
5,040 sqft
5,760 sqft
Residential Property Types ?
OAK PARK
COOK COUNTY
2+ story homes
62.3%
27.3%
1-story homes
31%
54.5%
Townhomes / row houses
6.5%
7.8%
Split-level homes
0.2%
10.4%
% of Residential Properties Feature ?
OAK PARK
COOK COUNTY
Central AC
56%
56.4%
Fireplaces
38.8%
32%
Garage
92.2%
88%
Full basement
87.9%
58.2%
Detailed Statistics
Key Numbers ?
28,230
Homes & Townhomes
99.2%
Homes with increased assessments
38yrs
Median home age
Size Metrics ?
1,900sqft.
Median building size
10,000sqft.
Median land size
Residential Property Types ?
2+ story homes 33.9%
1-story homes 27.8%
Townhomes / row houses 16.2%
Split-level homes 22.1%
% of Residential Properties Feature ?
Central AC
81.6%
Fireplaces
71.8%
Garage
98.2%
Full basement
39.2%
Key Numbers ?
ORLAND
COOK COUNTY
Median market value
$350,000
$290,010
Change in Assessments
35.6%
25.2%
Homes & Townhomes
28,230
929,187
Homes with increased assessments
99.2%
91.9%
Median home age
38 yrs
69 yrs
Size Metrics ?
ORLAND
COOK COUNTY
Median building size
1,900 sqft
1,374 sqft
Median land size
10,000 sqft
5,760 sqft
Residential Property Types ?
ORLAND
COOK COUNTY
2+ story homes
33.9%
27.3%
1-story homes
27.8%
54.5%
Townhomes / row houses
16.2%
7.8%
Split-level homes
22.1%
10.4%
% of Residential Properties Feature ?
ORLAND
COOK COUNTY
Central AC
81.6%
56.4%
Fireplaces
71.8%
32%
Garage
98.2%
88%
Full basement
39.2%
58.2%
Detailed Statistics
Key Numbers ?
27,006
Homes & Townhomes
99.5%
Homes with increased assessments
53yrs
Median home age
Size Metrics ?
1,856sqft.
Median building size
9,870sqft.
Median land size
Residential Property Types ?
2+ story homes 41.4%
1-story homes 34.7%
Townhomes / row houses 14.8%
Split-level homes 9.2%
% of Residential Properties Feature ?
Central AC
81.3%
Fireplaces
60%
Garage
98.2%
Full basement
40.6%
Key Numbers ?
PALATINE
COOK COUNTY
Median market value
$420,000
$290,010
Change in Assessments
27.9%
25.2%
Homes & Townhomes
27,006
929,187
Homes with increased assessments
99.5%
91.9%
Median home age
53 yrs
69 yrs
Size Metrics ?
PALATINE
COOK COUNTY
Median building size
1,856 sqft
1,374 sqft
Median land size
9,870 sqft
5,760 sqft
Residential Property Types ?
PALATINE
COOK COUNTY
2+ story homes
41.4%
27.3%
1-story homes
34.7%
54.5%
Townhomes / row houses
14.8%
7.8%
Split-level homes
9.2%
10.4%
% of Residential Properties Feature ?
PALATINE
COOK COUNTY
Central AC
81.3%
56.4%
Fireplaces
60%
32%
Garage
98.2%
88%
Full basement
40.6%
58.2%
Detailed Statistics
Key Numbers ?
13,664
Homes & Townhomes
97.1%
Homes with increased assessments
54yrs
Median home age
Size Metrics ?
1,762sqft.
Median building size
10,244sqft.
Median land size
Residential Property Types ?
2+ story homes 28.2%
1-story homes 39.1%
Townhomes / row houses 10.9%
Split-level homes 21.8%
% of Residential Properties Feature ?
Central AC
78.1%
Fireplaces
56.8%
Garage
94.1%
Full basement
35.3%
Key Numbers ?
PALOS
COOK COUNTY
Median market value
$400,000
$290,010
Change in Assessments
20%
25.2%
Homes & Townhomes
13,664
929,187
Homes with increased assessments
97.1%
91.9%
Median home age
54 yrs
69 yrs
Size Metrics ?
PALOS
COOK COUNTY
Median building size
1,762 sqft
1,374 sqft
Median land size
10,244 sqft
5,760 sqft
Residential Property Types ?
PALOS
COOK COUNTY
2+ story homes
28.2%
27.3%
1-story homes
39.1%
54.5%
Townhomes / row houses
10.9%
7.8%
Split-level homes
21.8%
10.4%
% of Residential Properties Feature ?
PALOS
COOK COUNTY
Central AC
78.1%
56.4%
Fireplaces
56.8%
32%
Garage
94.1%
88%
Full basement
35.3%
58.2%
Detailed Statistics
Key Numbers ?
37,578
Homes & Townhomes
97.3%
Homes with increased assessments
73yrs
Median home age
Size Metrics ?
1,216sqft.
Median building size
6,012sqft.
Median land size
Residential Property Types ?
2+ story homes 21.6%
1-story homes 67.7%
Townhomes / row houses 4.6%
Split-level homes 6.1%
% of Residential Properties Feature ?
Central AC
51%
Fireplaces
17.3%
Garage
91.7%
Full basement
70.6%
Key Numbers ?
PROVISO
COOK COUNTY
Median market value
$230,010
$290,010
Change in Assessments
27.7%
25.2%
Homes & Townhomes
37,578
929,187
Homes with increased assessments
97.3%
91.9%
Median home age
73 yrs
69 yrs
Size Metrics ?
PROVISO
COOK COUNTY
Median building size
1,216 sqft
1,374 sqft
Median land size
6,012 sqft
5,760 sqft
Residential Property Types ?
PROVISO
COOK COUNTY
2+ story homes
21.6%
27.3%
1-story homes
67.7%
54.5%
Townhomes / row houses
4.6%
7.8%
Split-level homes
6.1%
10.4%
% of Residential Properties Feature ?
PROVISO
COOK COUNTY
Central AC
51%
56.4%
Fireplaces
17.3%
32%
Garage
91.7%
88%
Full basement
70.6%
58.2%
Detailed Statistics
Key Numbers ?
22,216
Homes & Townhomes
99.3%
Homes with increased assessments
53yrs
Median home age
Size Metrics ?
1,551sqft.
Median building size
8,750sqft.
Median land size
Residential Property Types ?
2+ story homes 31.9%
1-story homes 36.8%
Townhomes / row houses 10.6%
Split-level homes 20.7%
% of Residential Properties Feature ?
Central AC
73.4%
Fireplaces
51.5%
Garage
93.5%
Full basement
35%
Key Numbers ?
RICH
COOK COUNTY
Median market value
$200,000
$290,010
Change in Assessments
54.6%
25.2%
Homes & Townhomes
22,216
929,187
Homes with increased assessments
99.3%
91.9%
Median home age
53 yrs
69 yrs
Size Metrics ?
RICH
COOK COUNTY
Median building size
1,551 sqft
1,374 sqft
Median land size
8,750 sqft
5,760 sqft
Residential Property Types ?
RICH
COOK COUNTY
2+ story homes
31.9%
27.3%
1-story homes
36.8%
54.5%
Townhomes / row houses
10.6%
7.8%
Split-level homes
20.7%
10.4%
% of Residential Properties Feature ?
RICH
COOK COUNTY
Central AC
73.4%
56.4%
Fireplaces
51.5%
32%
Garage
93.5%
88%
Full basement
35%
58.2%
Detailed Statistics
Key Numbers ?
2,852
Homes & Townhomes
93.9%
Homes with increased assessments
99yrs
Median home age
Size Metrics ?
2,504sqft.
Median building size
9,400sqft.
Median land size
Residential Property Types ?
2+ story homes 69.5%
1-story homes 21.4%
Townhomes / row houses 8.1%
Split-level homes 1%
% of Residential Properties Feature ?
Central AC
70.8%
Fireplaces
75.9%
Garage
90.4%
Full basement
78.2%
Key Numbers ?
RIVER FOREST
COOK COUNTY
Median market value
$917,620
$290,010
Change in Assessments
29.7%
25.2%
Homes & Townhomes
2,852
929,187
Homes with increased assessments
93.9%
91.9%
Median home age
99 yrs
69 yrs
Size Metrics ?
RIVER FOREST
COOK COUNTY
Median building size
2,504 sqft
1,374 sqft
Median land size
9,400 sqft
5,760 sqft
Residential Property Types ?
RIVER FOREST
COOK COUNTY
2+ story homes
69.5%
27.3%
1-story homes
21.4%
54.5%
Townhomes / row houses
8.1%
7.8%
Split-level homes
1%
10.4%
% of Residential Properties Feature ?
RIVER FOREST
COOK COUNTY
Central AC
70.8%
56.4%
Fireplaces
75.9%
32%
Garage
90.4%
88%
Full basement
78.2%
58.2%
Detailed Statistics
Key Numbers ?
4,946
Homes & Townhomes
90.3%
Homes with increased assessments
80yrs
Median home age
Size Metrics ?
1,559sqft.
Median building size
7,100sqft.
Median land size
Residential Property Types ?
2+ story homes 40.5%
1-story homes 52.9%
Townhomes / row houses 3.5%
Split-level homes 3%
% of Residential Properties Feature ?
Central AC
72.9%
Fireplaces
48.6%
Garage
95.3%
Full basement
76.8%
Key Numbers ?
RIVERSIDE
COOK COUNTY
Median market value
$420,000
$290,010
Change in Assessments
21.3%
25.2%
Homes & Townhomes
4,946
929,187
Homes with increased assessments
90.3%
91.9%
Median home age
80 yrs
69 yrs
Size Metrics ?
RIVERSIDE
COOK COUNTY
Median building size
1,559 sqft
1,374 sqft
Median land size
7,100 sqft
5,760 sqft
Residential Property Types ?
RIVERSIDE
COOK COUNTY
2+ story homes
40.5%
27.3%
1-story homes
52.9%
54.5%
Townhomes / row houses
3.5%
7.8%
Split-level homes
3%
10.4%
% of Residential Properties Feature ?
RIVERSIDE
COOK COUNTY
Central AC
72.9%
56.4%
Fireplaces
48.6%
32%
Garage
95.3%
88%
Full basement
76.8%
58.2%