Where can I find apartments for rent in the United States?

Here is one option for renting an apartment in the U.S.: UDR Apartments, at https://www.udr.com/. I chose it because its own site presents a large set of apartment communities across the country, and it has a search tool for them. What the site says - The homepage describes upscale apartment living and exceptional service in New York City, Los Angeles, Washington DC, and the San Francisco Bay Area. It also lists city pages for many more markets, including Austin, Boston, Dallas, Denver, Nashville, Orlando, Seattle, and Tampa (https://www.udr.com/). - The apartment search page, https://www.udr.com/search-apartments/, says UDR has communities in 21 diverse markets across the U.S. It lists markets that include Portland, Richmond, San Diego, and West Palm Beach, among others. - The search page has optional filters for Bedrooms (min) and a maximum rent, with rent options from $1,500 up to $10,000. You can also search by city, state, or community name. - For help narrowing things down, the site offers an apartment search concierge: Answer a few questions and we'll help you narrow down the search for your next home. - Its featured communities include addresses such as Palo Verde, 7880 US-290, Austin, TX 78736 and 95 Wall, 95 Wall Street, New York, NY 10005. How to take the next step Go to https://www.udr.com/search-apartments/, enter a city, state, or community name, and optionally set a minimum number of bedrooms and a maximum rent. If you aren't sure where to start, use the concierge at https://www.udr.com/apartment-search-concierge/. What the site did not say - I did not see specific available units, current rents, or move-in dates on the pages I read. Those would appear in the search results or on individual community pages, which I did not open. - I did not check pet policies, fees, lease terms, or application requirements. The search page's description mentions pet-friendly apartments, but I did not verify the details. - I only read the homepage and the search page, so I can't speak to the details of any individual community. - This is a single option. I did not compare it with other apartment providers, so you may want to look at others as well.