The enclave of Highland Park in Texas might be considered the conservative equivalent of Berkeley, California. In 2010, the city had the highest share of donations to Republican party. Author Josh Harkinson writes:
"It's no secret why Highland Park attracts so many rich conservatives. It has a prime location near Dallas' financial center and one of the lowest property tax rates in a state with no income tax. Yet it has one of the nation's best school systems and an average emergency response time of 2.5 minutes... Wilbur David Cook, the urban planner who designed Beverly Hills, drew up the plan for Highland Park a few years before it was incorporated in 1913. One of the community's first (if factually dubious) slogans, 'It's 10 degrees cooler in Highland Park,' reflected its attractiveness to the elite, as did its restrictions prohibiting property sales to minorities."
Thanks to Urbanists Listserv