Nassau County is in general a safe place to visit. As anywhere, just use basic common sense; this is the average suburban county. Crimes, if any, usually occur in Hempstead, Freeport, Roosevelt, Uniondale, New Cassel/Westbury and Elmont. The Island Trees/Plainedge area of Levittown has seen an increase in crime lately, as well as the western part of Hicksville south of Cantiague Park. Gang violence is rampant in New Cassel, Hempstead, Uniondale, Roosevelt and Freeport. The only safe areas of Hempstead are west of Cathedral Ave, north of Hempstead Tpke and east of Westbury Rd, north of Hempstead Tpke. Uniondale and Roosevelt are safe in the daylight, but be extra careful at night. New Cassel is relatively safe during the day but very dangerous at night. Freeport south of Sunrise Hwy is very safe.
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English is the main language. Hempstead, Uniondale, New Cassel, Westbury and Freeport have large Spanish-speaking populations.