Duplicate Page Title for a Large Listing Website

[StorageUnitAuctionList]

My company has a popular website that has over 4,000 crawl errors showing in Moz, most of them coming up as Duplicate Page Title. These duplicate page titles are coming from pages with the title being the keyword, then location, such as:

"main keyword" North Carolina
"main keyword" Texas

... and so forth. These pages are ranked and get a lot of traffic. I was wondering what the best solution is for resolving these types of crawl errors without it effecting our rankings.

Thanks!

[TakeshiYoung]

If you are appending the city name to the keyword, then it's not a duplicate title. There must be other pages somewhere on your site that are generating the duplicate titles. If you are using Google Webmaster Tools, it will show you all the duplicate titles on your site as well as which pages are using the same title.

[RepLoc_Tim]

As Takeshi said, you shouldn't be getting a duplicate title error if each location in the title is different.  Definitely should check Google Webmaster Tools as he said.  I suspect it may be a canonical problem, or www vs non-www duplicate content issue.  Or perhaps an http and https issue.  Without knowing your site details, that would be something to check.

[NakulGoyal]

I'd recommend you use a crawler like Screaming Frog and find out what the issue is. Do you see the duplicate titles or descriptions issue in your Google Webmaster Console ? Check under Optimization > HTML Improvements to see what Google is reporting.

[StorageUnitAuctionList]

Thanks, everyone, for the responses. I downloaded the crawl error CSV and sorted it by duplicate title... there a lot of cities without states attached to them, so that's where all the thousands of duplicate titles are coming from and we're taking care of that fast!

Thanks!