Machine SEO: These are the 20 hottest zip codes in America

1. Watauga, Texas (76148)

Watauga tops this list for the second year in a row, excelling on just about every metric one could hope for: a growing economy, top-notch schools, strong restaurants, and a variety of cultural and entertainment options. It's no wonder homes in this zip code are being viewed 28% more often than last year.

2. Livonia, Michigan (48154)

In stark contrast to its surrounding areas and much of the United States, over 86% of millennials living in this zip code own the home where they live. Livonia is one of Michigan's safest cities.

3. Kentwood, Michigan (49548)

Located in Grand Rapids, Kentwood is developing a reputation for its restaurants and microbreweries. It also has a thriving economy and is close to Gerald R. Ford International Airport.

4. Medford, Massachusetts (02155)

With easy access to downtown Boston, low tax rates, and great dining options, Medford is becoming an attractive option for Massachusetts residents.

5. Littleton, Colorado (80123)

Littleton has an abundance of parks and trails, as well as a vibrant downtown area with high-quality options for shopping.

6. Castro Valley, California (94546)

Castro Valley is an attractive option for those who want to work in Silicon Valley without having to pay prohibitive housing prices.

7. Colorado Springs, Colorado (80922)

Residents flock to this neighborhood for its excellent location — it's close to the Colorado Springs Airport, University of Colorado at Colorado Springs, and downtown Colorado Springs — and abundant options for outdoor activities, including hiking, biking, and horse-riding trails.

8. Overland Park, Kansas (66210)

Overland Park boasts an excellent school system, reasonably priced homes, and close proximity to Kansas City.

9. Mira Mesa, California (92126)

Located in San Diego, Mira Mesa received high marks for its emphasis on local businesses, diverse residents, and proximity to a beach and nature reserve.

10. Hilliard, Ohio (43026)

Hilliard cracked the top 10 due to its standout schools, small-town vibe, museums, and excellent size-to-price ratios.

Source: Realtor.com

11. Elk Grove, California (95758)

Elk Grove is home to plenty of high earners. Its median household income of $84,454 is over $20,000 higher than the state of California's.

Source: City-data.com

12. Boise, Idaho (83704)

Boise is home to a diverse economy, which includes tech companies like Hewlett-Packard, medical facilities, and five higher-education institutions.

Source: Boise.org

13. Louisville, Kentucky (40220)

Louisville is building a reputation as a culinary hotspot, earning acclaim from Southern Living magazine and Zagat.

Source: Gotolouisville.com

14. Nashville, Tennessee (37214)

Beyond being the center of the country music industry, Nashville is an affordable home for the budget-conscious. Its cost of living is 4.5% lower than the national average.

Source: Visitmusiccity.com

15. Rochester, New York (14623)

Home to over one million residents, Rochester boasts a number of cultural events year-round, including a lilac and jazz festival.

Source: Visitrochester.com

16. Omaha, Nebraska (68144)

Omaha's riverfront and downtown area have received over $2 billion in new investments in the past few years, making its surrounding suburbs even more attractive to residents.

Source: Visitomaha.com

17. Fort Wayne, Indiana (46815)

The second-largest city in Indiana, Fort Wayne is an ideal home base for those looking for affordable houses.

Source: Visitfortwayne.com

18. Wichita, Kansas (67212)

Wichita is an attractive destination for those who like spending time outdoors. The city's air quality is 21% better than the national average, and its pollution index is 95% better than the national average.

Source: Visitwichita.com