Real Estate Data API

Sister Bay WI

141 active listings out of 3.8K total properties we track across 9 Sister Bay ZIPs — listings, off-market homes, rentals, and full sales/tax history. Refreshed nightly.

Get this data → API docs
Active
141
Median
$574K
+3.0%
Sold Sep
11
-21.4%
Tracked
3.8K
Zoomed out

While you're here, take in the bigger picture — maps below show Wisconsin (statewide), not just Sister Bay. Same company, same dataset, different resolution.

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Inventory breakdown

Distribution of the 141 currently-active listings in Sister Bay, WI. Full dataset covers 3.8K properties — listings, off-market homes, rentals, and full history.

Active by price range
Under $300K 35 (24.8%)
$300K–$500K 32 (22.7%)
$500K–$750K 17 (12.1%)
$750K–$1M 24 (17%)
$1M–$2M 27 (19.1%)
$2M+ 6 (4.3%)
Active by bedroom count
Studio/1 bd 9
2 bd 49
3 bd 41
4 bd 9
5+ bd 5
Active by property type
Condo 68 (48.2%)
Single Family 40 (28.4%)
Lot 27 (19.1%)
Other 4 (2.8%)
Townhouse 2 (1.4%)

ZIP codes in Sister Bay

Drill into any ZIP for hex-level breakdowns.

54234
→
Active
140
Tracked
3.7K
54211
→
Active
1
Tracked
117
54212
→
Active
0
Tracked
9
54324
→
Active
0
Tracked
3
53234
→
Active
0
Tracked
2
54210
→
Active
0
Tracked
2
54202
→
Active
0
Tracked
1
54209
→
Active
0
Tracked
1
54235
→
Active
0
Tracked
1

Nearby cities

Other Wisconsin cities within driving distance.

Ellison Bay
6.3 mi away
Active: 63
Fish Creek
7.2 mi away
Active: 117
Baileys Harbor
8.5 mi away
Active: 92
Egg Harbor
13.3 mi away
Active: 259
Washington Island
16.7 mi away
Active: 17
Sturgeon Bay
26.2 mi away
Active: 431
Marinette
26.6 mi away
Active: 191
Porterfield
33.5 mi away
Active: 33
For Developers

Get Sister Bay, WI data in your app

curl
request 
GET https://api.straply.com/v1/markets/city/sister-bay-wi
Authorization: Bearer $STRAPLY_KEY
200 OK response 
{
  "city": "sister-bay-wi",
  "total_tracked": 3827,
  "active": 141,
  "median_list": 574000
}
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Sister Bay, WI real estate: market summary

As of November 2026, Straply tracks 3,827 homes in Sister Bay, WI, with 141 active for sale at a median list price of $574,000 (~$397/sq ft). Notably, most homes were built in the 1990s.

Median list price
$574,000
Median $/sq ft
$397
Active listings
141
Median sale price
$417,500 (+3% YoY)
Properties tracked
3,827

Frequently asked: Sister Bay, WI real estate

What is the median home price in Sister Bay?

The median list price in Sister Bay, WI is $574,000 (about $397 per square foot), based on 141 active listings tracked by Straply as of November 2026.

What price range are homes in Sister Bay?

Active listings in Sister Bay, WI concentrate in: 25% under $300k and 23% $300k–$500k.

Are home prices in Sister Bay going up or down?

The median sale price is $417,500, up 3% year over year. Straply tracked 99 sales here over the past 12 months.

How many homes are for sale in Sister Bay?

Straply is tracking 141 active listings in Sister Bay, WI out of 3,827 properties on record as of November 2026.

How old are the homes in Sister Bay?

Most homes in Sister Bay, WI were built in the 1990s. About 76% were built after 1980, while 6% predate 1940. The newest tracked home dates to 2026.

What types of homes are in Sister Bay?

Sister Bay, WI is mostly condos (48% of listings). Also common: single-family homes 28%, lots / land 19%.

How many bedrooms do homes in Sister Bay typically have?

The most common size in Sister Bay, WI is 2 bd.

What are the most active ZIP codes in Sister Bay?

The ZIP codes with the most active listings in Sister Bay, WI are 54234, 54211.

What areas are near Sister Bay?

Nearby markets Straply also tracks include Ellison Bay, Fish Creek, Baileys Harbor, Egg Harbor.

Data as of November 2026. Source: Straply. For address-level history and programmatic access, use the Straply API.