RealtyTrac continues its series highlighting natural disaster hot spots, identifying risk levels--ranging from very low to very high--of communities across the nation.

On the earthquake front, it's no surprise that top five counties with the most homes at risk  (high or very high risk) are all found in California. The top county was Los Angeles (with more than 3.4 million homes in harm's way), followed by San Diego County, Orange County, Riverside County and San Bernardino County.

Head over to RealtyTrac to check out an interactive heat map of every U.S. county:

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