House Prices

House Prices & Home Values Seneca, IL 2026


Average Data

average house price$224,225
average size per house1636 ft²
average price per ft²138 $ / ft²

06/20/2026 - The value range (VR) for house prices in Seneca, IL is $151/ sqft to $151/ sqft. An average home with 1636 sqft costs approximately $247,036 to $247,036. Seneca, IL includes 1 ZIP codes and it is located in LaSalle county. The lowest prices are found in ZIP 61360, while the highest are in ZIP 61360. The average price per sqare feet is $138. Our analysis is based on 8 property listings.

Avergage prices by ZIP codes Seneca

61360156 $ / ft²




Historical development of home values in Seneca

Year Estimated value (USD) Change vs. 2025
2010 $104,134 -53.6%
2011 $100,107 -55.4%
2012 $99,838 -55.5%
2013 $103,569 -53.8%
2014 $108,719 -51.5%
2015 $114,299 -49.0%
2016 $120,264 -46.4%
2017 $126,755 -43.5%
2018 $133,763 -40.3%
2019 $139,965 -37.6%
2020 $147,201 -34.4%
2021 $167,425 -25.3%
2022 $195,180 -13.0%
2023 $205,826 -8.2%
2024 $217,734 -2.9%
2025 $224,225 0.0%

Graph: estimated home values in Seneca over time (USD)



Example: 100% financing house in Seneca

Loan amount: $224,225

Interest rate: 6.00%

Fixed monthly payment: $1,344.34

Breakdown in the 1st month:
Interest portion: $1,121.13  –  Principal portion: $223.22

Yearly breakdown (100% financing)

Year Interest per year ($) Principal per year ($) Remaining balance at year-end ($)
1 $13,378.60 $2,753.51 $221,471.49
2 $13,208.77 $2,923.34 $218,548.15
3 $13,028.46 $3,103.64 $215,444.51
4 $12,837.04 $3,295.07 $212,149.44
5 $12,633.80 $3,498.30 $208,651.13
6 $12,418.03 $3,714.07 $204,937.06
7 $12,188.96 $3,943.15 $200,993.91
8 $11,945.75 $4,186.35 $196,807.56
9 $11,687.55 $4,444.56 $192,363.00
10 $11,413.42 $4,718.69 $187,644.32
11 $11,122.38 $5,009.73 $182,634.59
12 $10,813.39 $5,318.71 $177,315.88
13 $10,485.34 $5,646.76 $171,669.11
14 $10,137.06 $5,995.04 $165,674.07
15 $9,767.30 $6,364.80 $159,309.27
16 $9,374.74 $6,757.37 $152,551.90
17 $8,957.96 $7,174.15 $145,377.75
18 $8,515.47 $7,616.63 $137,761.12
19 $8,045.69 $8,086.41 $129,674.71
20 $7,546.94 $8,585.16 $121,089.54
21 $7,017.43 $9,114.68 $111,974.86
22 $6,455.25 $9,676.85 $102,298.01
23 $5,858.41 $10,273.70 $92,024.31
24 $5,224.75 $10,907.36 $81,116.95
25 $4,552.01 $11,580.10 $69,536.85
26 $3,837.77 $12,294.34 $57,242.52
27 $3,079.48 $13,052.62 $44,189.89
28 $2,274.43 $13,857.68 $30,332.21
29 $1,419.71 $14,712.39 $15,619.82
30 $512.29 $15,619.82 $0.00

Note: The calculation is based on a standard annuity mortgage with a fixed monthly payment over the entire term. Extra payments, interest rate changes, and additional purchase costs (e.g. taxes, notary fees) are not included.


How to sell in Seneca, IL


1500 sqft3900 sqft
Ø selling price$250,471$532,818
Ø fast selling$227,701$479,537
Ø high price sale$273,240$586,100

In 2026, houses in Seneca, IL will be offered at an average price of $138 per square foot. A 1,500 sqft home priced at $250,471 is 23.76% more expensive per square foot than a 3,900 sqft home priced at $532,818. Home prices in Seneca, IL vary significantly depending on the neighborhood and location. For a quick sale, a 2,700 sqft home should be listed at around $368,875. Sellers who can wait longer may achieve a higher price of up to $450,847.


Discover Seneca, IL

Seneca, IL is a scenic village along the Illinois River that blends small-town charm with easy access to outdoor adventure.
Known for its welcoming community and riverfront setting, Seneca, Illinois offers a relaxed pace with room to explore.

Location & Access

Conveniently located near Interstate 80 and along US Route 6 with Illinois Route 170 crossing the river, Seneca connects residents to employment centers in Grundy and La Salle counties.
Visitors appreciate the quick drives to nearby Ottawa, Morris, and Starved Rock State Park for dining, shopping, and day trips.

Outdoor Recreation

The Illinois & Michigan Canal heritage corridor and towpath trail invite hiking, biking, and wildlife watching in every season.
Boating and fishing on the Illinois River, plus neighborhood parks and ball fields, make Seneca a family-friendly base for year-round recreation.

History & Community

Local landmarks and museums honor the area?s maritime and agricultural roots, reflecting the village?s role in regional industry and river commerce.
Seasonal festivals, youth sports, and community events bring neighbors together and keep Seneca?s historic downtown vibrant.

Living & Visiting

From starter homes to acreage and river-view properties, Seneca, IL real estate appeals to buyers seeking value, space, and strong schools.
Whether you?re planning a weekend getaway or a permanent move, you?ll find friendly restaurants, essential services, and convenient amenities throughout Seneca, Illinois.



FAQ – Home Values in Seneca

What is the median home value in Seneca in 2026?

In 2026, the typical home value in Seneca is about $224,225 for an average home size of 1636 square feet. This corresponds to an average price of roughly $138 per square foot.

What is the average cost per square foot in Seneca?

In 2026, homes in Seneca sell for an average of around $138 per square foot, with a typical range between $151 and $151 per square foot, depending on the property’s location, condition, and lot size.

What is the average home size in ?

The average home size in Seneca is about 1636 square feet, with an estimated 2026 value around $224,225.



Locations close to Seneca, IL

Sheffield, IL101 $ / ft²
Spring Valley, IL101 $ / ft²
Standard, IL139 $ / ft²
Seatonville, IL169 $ / ft²
Rutland, IL117 $ / ft²
Princeton, IL71 $ / ft²
  imprint  Privacy