Real Estate Data API

Sister Bay WI

33 active listings out of 3.5K total properties we track across 6 Sister Bay ZIPs — listings, off-market homes, rentals, and full sales/tax history. Refreshed nightly.

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Active
33
Median
$750K
+33.0%
Sold/mo
1
-80.0%
Tracked
3.5K
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 33 currently-active listings in Sister Bay, WI. Full dataset covers 3.5K properties — listings, off-market homes, rentals, and full history.

Active by price range
Under $300K 3 (9.1%)
$300K–$500K 8 (24.2%)
$500K–$750K 5 (15.2%)
$750K–$1M 7 (21.2%)
$1M–$2M 7 (21.2%)
$2M+ 3 (9.1%)
Active by bedroom count
Studio/1 bd 4
2 bd 13
3 bd 10
4 bd 4
5+ bd 2
Active by property type
Condo 25 (75.8%)
Single Family 8 (24.2%)

ZIP codes in Sister Bay

Drill into any ZIP for hex-level breakdowns.

54234
→
Active
32
Tracked
3.4K
54211
→
Active
1
Tracked
108
54212
→
Active
0
Tracked
11
54210
→
Active
0
Tracked
2
54202
→
Active
0
Tracked
1
54209
→
Active
0
Tracked
1

Nearby cities

Other Wisconsin cities within driving distance.

Ephraim
2.9 mi away
Active: 11
Ellison Bay
6.4 mi away
Active: 19
Fish Creek
7.2 mi away
Active: 53
Baileys Harbor
8.5 mi away
Active: 41
Egg Harbor
13.1 mi away
Active: 120
Washington Island
16.7 mi away
Active: 9
Sturgeon Bay
26.2 mi away
Active: 222
Marinette
26.6 mi away
Active: 78
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": 3492,
  "active": 33,
  "median_list": 750000
}
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Sister Bay, WI real estate: market summary

As of April 2026, Straply tracks 3,492 homes in Sister Bay, WI, with 33 active for sale at a median list price of $750,000 (~$395/sq ft). Notably, home prices are climbing — the median sale price is up 33% year over year.

Median list price
$750,000
Median $/sq ft
$395
Active listings
33
Median sale price
$745,000 (+33% YoY)
Properties tracked
3,492

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 $750,000 (about $395 per square foot), based on 33 active listings tracked by Straply as of April 2026.

What price range are homes in Sister Bay?

Active listings in Sister Bay, WI concentrate in: 24% $300k–$500k and 21% $750k–$1m.

Are home prices in Sister Bay going up or down?

The median sale price is $745,000, up 33% year over year. Straply tracked 112 sales here over the past 12 months.

How many homes are for sale in Sister Bay?

Straply is tracking 33 active listings in Sister Bay, WI out of 3,492 properties on record as of April 2026.

How old are the homes in Sister Bay?

Most homes in Sister Bay, WI were built in the 1990s. About 73% were built after 1980, while 8% predate 1940. The newest tracked home dates to 2025.

What types of homes are in Sister Bay?

Sister Bay, WI is mostly condos (76% of listings). Also common: single-family homes 24%.

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 Ephraim, Ellison Bay, Fish Creek, Baileys Harbor.

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