Millennials keep moving away from cities during the pandemic looking for more affordable housing and space to raise a family, according to Realtor.com’s annual list of hottest ZIP codes in the USA.

Half of this year’s top markets are suburbs in the Northeast, including Rochester, New York; Melrose, Massachusetts; South Portland, Maine: Hudson, New Hampshire; and Worcester, Massachusetts.

Easy access to both downtown amenities and outdoor space, relative affordability in a strong local economy and a large number of millennial homebuyers, are the factors for their popularity, the report shows.

Demand for markets in the Northeast was driven by a lack of affordability in nearby, larger cities such as New York and Boston where prices have skyrocketed and increased space is a luxury many can’t afford, experts say.

“The Northeast has done a better job of maintaining affordability and keeping up with the demand for housing and construction,” says Danielle Hale, chief economist at Realtor.com. “That region, in particular, was the initial epicenter of the coronavirus but has since recovered. As those economies bounce back, so do their housing markets.”

Realtor.com analyzed 20,000 ZIP codes based on the time it takes properties to sell and how frequently homes were viewed in each ZIP code from April to June. Eligible ZIP codes had at least 13 active listings each month to calculate a Hotness ranking and were limited to one ZIP code per metropolitan area.

Here are the hottest ZIP codes for housing:

1. 80911: Colorado Springs, Colorado.

This ZIP code is on the southern edge of Colorado Springs and about 1.5 hours from Denver. The area offers residents a great quality of life, including affordable homes, especially compared with Denver, according to Hale. The median listing price is up 6.5% year-over-year but 39% lower than the metro and 13% lower than the national median.

Average number of days on the market: 13

Median list price: $287,000

2. 43068: Reynoldsburg, Ohio.

The area, which has easy access to downtown Columbus attracts young and growing families with its quiet suburban feel. The median-priced home is 37% less than the metro and 38% less than the national median.

Average number of days on the market: 17

Median list price: $204,000

3. 14617: Rochester, New York.

Rochester is New York’s third-largest metro area. This ZIP code is along the Genesee River and southern shore of Lake Ontario. The median listing price is up 16.6% year-over-year, but 35% lower than the metro and 51% lower than the national median.

Average number of days on the market: 18

Median list price: $162,000

4. 02176: Melrose, Mass.

This is 10 miles north of Boston and attracts many young families who are looking for space but still want to enjoy a quick commute to the city. The median listing price is 2% higher than the metro and 95% higher than the national median.

Average number of days on the market: 19

Median list price: $644,000

5. 04106: South Portland, Maine.

South Portland is a short drive from Portland Head, Maine’s oldest lighthouse. This ZIP code is on Casco Bay and is part of South Portland, offering a slightly more affordable option compared with the city of Portland, while still being close to downtown. The median list price is up 4.2% year-over-year. Asking prices are 9% lower than the metro overall, but 14% higher than the U.S. median.

Average number of days on the market: 21

Median list price: $377,000

6. 66614: Topeka, Kan.

This location is on the western side of Topeka, the state capital. It attracts move-up and first-time homebuyers because of affordability and close proximity to shopping and entertainment. The median listing price is 14% more than the metro but 44% lower than the national median.

Average number of days on the market:19

Median list price: $184,000

7. 03051: Hudson, NH.

Many families looking to escape the busy Boston area head just over the border, according to Hale. Known as “tax free” New Hampshire, locals enjoy a lower cost of living with no state income or sales tax. The median listing price is 12% lower than metro as a whole.

Average number of days on the market: 22

Median list price: $350,000

8. 01602: Worcester, Mass.

Worcester, an hour outside Boston, is a hot spot for families and retirees looking for three- or four-bedroom homes. Rising home prices have pushed it out of reach for many first-time homebuyers. Worcester State University is in the heart of this ZIP code and is one of the largest employers in the area. The median listing price is 14% lower than metro as a whole and 4% lower than the national median.

Average number of days on the market: 21

Median list price: $318,000

9. 22152: Springfield, Va.

This area, inland of the Potomac River, offers a mix of townhomes and single-family homes that provide options for first-time and move-up buyers as well as considerable green space with Pohick Creek Stream Valley Park to the east and Lake Accotink Park to the north. The median listing price is 8% higher than the rest of the metro and 68% higher than the national median.

Average number of days on the market: 7

Median list price: $553,000

10. 27604: Raleigh, NC.

Raleigh's affordability draws many buyers from more expensive cities. The area offers residents a variety of basketball programs to watch, including Duke University, North Carolina State University and the University of North Carolina-Chapel Hill. The median listing price is 27% lower than the metro and 17% lower than the national median.

Average number of days on the market: 25

Median list price: $273,000