3-digit ZIP regional index
Home appreciation in ZIP codes 603xxOak Park, IL area
FHFA HPI® data shows the regional home price index for ZIP codes beginning with 603 changed +8.7% over the year to Q2 2026, compared with +6.0% for Illinois and +3.0% for the United States.
The region covers ZIP codes 60301–60305. Most of its 2010 population lived in Cook County (100%). Communities in the region include River Forest. This is a regional index, not a ZIP5, street, or individual-home estimate.
- 1-year change
- +8.7%
- 5-year change
- +43.6%
- Since Q1 1995
- +291%
- National rank (1 year)
- 33rd
Year to Q2 2026
vs U.S. +41.3%
vs U.S. +292%
of 882 ZIP3 regions
ZIP3 603 vs Illinois and the U.S.
FHFA HPI® all-transactions index, rebased so Q1 1995 = 100, through Q2 2026
- ZIP3 603: 390.6
- Illinois: 283.5
- Chicago-Naperville-Schaumburg, IL metro: 296.2
- United States: 391.6
Want a different starting year? Rebase this chart or compare with another ZIP3.
Appreciation by time window
| Window | ZIP3 603 | IL | U.S. | Gap vs IL | Gap vs U.S. |
|---|---|---|---|---|---|
| 1 year | +8.7% | +6.0% | +3.0% | +2.7 pts | +5.7 pts |
| 3 years | +27.2% | +21.8% | +12.9% | +5.5 pts | +14.4 pts |
| 5 years | +43.6% | +46.9% | +41.3% | −3.3 pts | +2.4 pts |
| 10 years | +58.7% | +75.6% | +93.3% | −16.9 pts | −34.6 pts |
| Since Q1 1995 | +291% | +184% | +292% | +107.1 pts | −1.0 pts |
If you bought in ZIP3 603 in…
Applying the regional index change from the same quarter of each year to Q2 2026 to an example $300,000 purchase price. Individual homes can differ widely from the regional average.
| Bought in | Index change | $300,000 then, at the regional rate |
|---|---|---|
| Q2 1995 | +279% | $1,136,508 |
| Q2 2000 | +157% | $770,882 |
| Q2 2005 | +63.2% | $489,715 |
| Q2 2010 | +73.9% | $521,608 |
| Q2 2015 | +63.3% | $489,940 |
| Q2 2020 | +52.2% | $456,641 |
| Q2 2021 | +43.7% | $430,961 |
| Q2 2023 | +27.2% | $381,699 |
| Q2 2025 | +8.7% | $326,099 |
How ZIP3 603 ranks
Over the past year ZIP3 603 ranks 33rd of 882 3-digit ZIP regions nationally and 4th of 29 in Illinois. Its one-year change is +5.7 pts versus the nation and +2.7 pts versus Illinois. Rank 1 is the strongest appreciation.
| Window | National rank | Rank in Illinois |
|---|---|---|
| 1 year | 33rd of 882 | 4th of 29 |
| 3 years | 13th of 882 | 2nd of 29 |
| 5 years | 470th of 882 | 18th of 29 |
| 10 years | 820th of 882 | 25th of 29 |
| Since Q1 1995 | 339th of 879 | 1st of 29 |
Boom, bust, and recovery in ZIP3 603
ZIP3 603's index peaked in Q2 2007, fell 18.2% to its low in Q1 2012, and regained its peak in Q2 2021, about 14 years after the top. Today it sits +48.6% versus that 2000s peak. How every state and ZIP region fared
| Area | 2000s peak | Low point | Peak to low | Back to peak | Today vs peak |
|---|---|---|---|---|---|
| ZIP3 603 | Q2 2007 | Q1 2012 | -18.2% | Q2 2021 (14 yrs) | +48.6% |
| IL | Q1 2007 | Q2 2012 | -21.8% | Q2 2021 (14.2 yrs) | +51.8% |
| Metro | Q1 2007 | Q2 2012 | -28.9% | Q3 2021 (14.5 yrs) | +43.8% |
| U.S. | Q1 2007 | Q2 2012 | -19.0% | Q4 2016 (9.8 yrs) | +89.3% |
Appreciation after inflation
Adjusting for consumer price inflation, ZIP3 603's index has changed +76.4% in real terms since Q1 1995. Home prices vs inflation
| Window | Inflation (CPI-U) | ZIP3 603 after inflation | IL after inflation | Metro after inflation | U.S. after inflation |
|---|---|---|---|---|---|
| 1 year | +3.9% | +4.7% | +2.0% | +2.3% | -0.8% |
| 3 years | +9.8% | +15.9% | +10.9% | +11.0% | +2.8% |
| 5 years | +24.0% | +15.8% | +18.4% | +17.3% | +13.9% |
| 10 years | +39.1% | +14.1% | +26.3% | +26.3% | +39.0% |
| Since Q1 1995 | +121% | +76.4% | +28.0% | +33.8% | +76.8% |
Estimate appreciation for a home in ZIP3 603
Regional estimate
$476,143
- Estimated gain
- $176,143
- Index change
- +58.71%
- Start index
- 246.09
- End index
- 390.58
ZIP3 603 (Oak Park, IL area), Q2 2016 to Q2 2026. Index type: Native 3-Digit ZIP index.
Nearby 3-digit ZIP regions
| 3-digit ZIP region | State | 1 year | 5 years | Since Q1 1995 |
|---|---|---|---|---|
| 607 · Niles, IL area | IL | +7.8% | +39.1% | +199% |
| 606 · Chicago, IL area | IL | +7.0% | +38.5% | +270% |
| 608 · Cicero, IL area | IL | +5.0% | +42.3% | +183% |
| 602 · Evanston, IL area | IL | +11.4% | +45.3% | +260% |
| 601 · Elgin, IL area | IL | +6.8% | +49.8% | +185% |
| 604 · Joliet, IL area | IL | +5.5% | +44.5% | +162% |
Recent quarterly index values
| Period | Index |
|---|---|
| Q2 2026 | 390.58 |
| Q1 2026 | 366.94 |
| Q4 2025 | 358.81 |
| Q3 2025 | 363.13 |
| Q2 2025 | 359.32 |
| Q1 2025 | 343.94 |
| Q4 2024 | 334.89 |
| Q3 2024 | 344.35 |
| Q2 2024 | 332.53 |
| Q1 2024 | 313.94 |
| Q4 2023 | 327.10 |
| Q3 2023 | 316.83 |
Frequently asked questions
- How much have home prices risen in ZIP codes starting with 603?
- Based on FHFA HPI® data for 3-digit ZIP region 603, the regional index changed +8.7% over the year to Q2 2026, +43.6% over five years, +58.7% over ten years, and +291% since Q1 1995.
- Is ZIP3 603 appreciating faster than Illinois and the U.S.?
- Over the past year the region's index +8.7% compares with +6.0% for Illinois and +3.0% for the U.S., a gap of +5.7 pts versus the nation. Over five years the gap versus the nation is +2.4 pts.
- Which ZIP codes are in 3-digit ZIP region 603?
- All ZIP codes that begin with 603. Census 2010 ZIP Code Tabulation Areas in this region run from 60301 to 60305 (4 areas). FHFA publishes one index for the whole 3-digit region, not for each 5-digit ZIP code.
- Can I use this to value my home?
- No. The FHFA HPI® is a broad regional index of average price movement. It is not an appraisal, tax assessment, or automated valuation of any individual property. Use it as general context alongside local sales and a professional opinion.