Cities are more location-efficient – meaning key destinations are closer to where people live and work,” said Scott Bernstein, CNT’s President. “They require less time, money, fuel and greenhouse gas emissions for residents to meet their everyday travel needs. People can walk, bike, car-share, take public transit. So residents of cities and compact communities generate less CO2 per household than people who live in more dispersed communities, like many suburbs and outlying areas. “If you’re deciding where to live, consider moving to an urban area. You’ll help fight global warming by emitting less CO2. And you’re likely to drive less, so you’ll spend less on transportation, saving up to $5,000 annually.” CNT’s research shows that average transportation costs vary greatly depending on location, from a low of 14% of area household median income in transit-rich, compact communities, to highs of 28% or more in exurban areas where employment, retail, and other amenities are more dispersed.

An exceptional situation where non-urban households are even less carbon intensive would be off-grid living with distributed renewable power of your own or as part of a "transition town."