Irvine: Irvine is one of the nation's largest planned urban communities and encompasses more than 65 square miles. They contract for fire and medical services with the County of Orange, and have three independent districts: library, educational and utility services. Other government services include: animal control; building and safety regulation and inspection; general administrative services; planning and zoning; police; public facility/capital improvement construction; recreation and cultural programs; refuse collection and recycling; street lighting; street maintenance; landscape maintenance and transportation management.

A Planned City

The layout of Irvine was designed by Los Angeles architect William Pereira and Irvine Company employee Raymond Watson, and is nominally divided into townships called villages. The townships are separated by six-lane streets. Each township contains houses of similar design, along with commercial centers, religious institutions and schools. Commercial districts are checker-boarded in a periphery around the central townships.

Pereira originally envisioned a circular plan with numerous man-made lakes and the university in the center. When the Irvine Company refused to relinquish valuable farmland in the flat central region of the ranch for this plan, the University site was moved to the base of the southern coastal hills. The design that ended up being used was based on the shape of a necklace (with the villages strung along two parallel main streets, which terminate at University of California, Irvine (UCI), the "pendant")^{[citation needed]}. Traces of the original circular design are visible in the layout of the UCI campus and the two man-made lakes at the center of Woodbridge, one of the central villages.

All streets have landscaping allowances. Rights-of-way for powerlines also serve as bicycle corridors, parks and greenbelts to tie together ecological preserves. The greenery is irrigated with reclaimed water.

The homeowners' associations which govern some village neighborhoods exercise varying degrees of control on the appearances of homes. In more restrictive areas, houses' roofing, paint colors, and landscaping are regulated. Older parts of the Village of Northwood that were developed beginning in the early 1970s independent of the Irvine Company, have the distinction of being a larger village that is not under the purview of a homeowners' association. As a result, homeowners in the older Northwood areas do not pay a monthly village association fee; and its neighborhoods are generally not as uniform in appearance as those in other villages such as West Park and Woodbridge. However, the more tightly regulated villages generally offer more amenities such as members-only swimming pools, tennis courts, and parks.

In addition to association dues, homeowners in villages developed in the 1980s and later may be levied a Mello-Roos assessment, which came about in the post-Proposition 13 era. For homeowners in these areas, the association dues coupled with the Mello-Roos assessment may add significantly to the cost of living in the city.

The Irvine Ranch played host to the Boy Scouts of America's 1953 National Scout Jamboree. Jamboree Road, a major street which now stretches from Newport Beach to the City of Orange, was named in honor of this event.

The Villages

Each of the villages was initially planned to have a distinct architectural theme.