**Contiguous USA**

# Contiguous USA

## About this network

These are the 48 contiguous states and the District of Columbia of the United States of America (the USA). They include all states except the states of Alaska and Hawaii, which are not connected by land with the other states, and include the District of Columbia (DC). An edge denotes that two states share a border. The US states in the configuration given by this dataset exist since February 14, 1912, when Arizona was admitted as the 48th state, and is current as of 2014. The states of Alaska and Hawaii were admitted as the 49th and 50th states in 1959, but are not contiguous with the other states, and are not reflected in this dataset.

## Network info

Code | CU |

Category | ⬤ Infrastructure |

Date of origin | 1912 |

Data source | http://www-cs-faculty.stanford.edu/~uno/sgb.html |

Vertex type | State |

Edge type | Border |

Format | Undirected |

Edge weights | Unweighted |

Size | 49 vertices (states) |

Volume | 107 edges (borders) |

Average degree | 4.3673 edges / vertex |

Fill | 0.090986 edges / vertex^{2} |

Maximum degree | 8 edges |

Size of LCC | 49 vertices (network is connected) |

Wedge count | 421 |

Claw count | 494 |

Triangle count | 57 |

Square count | 70 |

4-tour count | 2,458 |

Power law exponent (estimated) with d_{min} | 8.9910 (d_{min} = 6) |

Gini coefficient | 20.1% |

Relative edge distribution entropy | 98.3% |

Assortativity | 0.23340 |

Clustering coefficient | 40.6% |

Diameter | 11 edges |

90-percentile effective diameter | 6.98 edges |

Mean shortest path length | 4.26 edges |

Spectral norm | 5.3186 |

Algebraic connectivity | 0.098049 |

## Downloads

TSV file: | contiguous-usa.tar.bz2 (1.96 KiB) |