It's about one-and-one-tenth times as big as Hilton Head
In other words, 30,000 acres is 1.11523 times the size of Hilton Head, and the size of Hilton Head is 0.896676 times that amount.(a.k.a. Hilton Head Island) (South Carolina)
Hilton Head Island measures 26,899.90 acres in total land area. The island (and city of the same name) is located in the Atlantic Ocean and is known as popular vacation destination.
It's about one-and-one-fifth times as big as Disney World
In other words, 30,000 acres is 1.2 times the size of Disney World, and the size of Disney World is 0.833 times that amount.(a.k.a. Walk Disney World Resort, a.k.a. Walt Disney World, a.k.a. WDW) (Lake Buena Vista and Bay Lake, Florida) (total site)
Disney World currently occupies 25,000 acres. Part of the former total area of 29,700 acres now comprises the Disney planned community of Celebration, Florida.
It's about seven-tenths as big as Washington, D.C.
In other words, 30,000 acres is 0.686 times the size of Washington, D.C., and the size of Washington, D.C. is 1.46 times that amount.(formally the District of Columbia, a.k.a. Washington, a.k.a. the District, a.k.a. DC) (United State)
The United States' capital and only federal district, Washington, D.C. is a 43,700 acres area located between the states of Virginia and Maryland. Washington, D.C. is known as the center of each of the three branches of the United States federal government and as home to many of the nation's monuments, museums, and foreign embassies.
It's about one-and-seven-tenths times as big as Coron Island
In other words, 30,000 acres is 1.7 times the size of Coron Island, and the size of Coron Island is 0.59 times that amount.(Calamian Islands, Palawan, Philippines)
A popular tourist destination, Coron Island, measures about 18,000 acres in total area. The rocky offshore area of the island makes it popular for shipwreck diving, with some wrecks as shallow as 10 ft. under the water.
It's about half as big as Abel Tasman National Park
In other words, 30,000 acres is 0.5389 times the size of Abel Tasman National Park, and the size of Abel Tasman National Park is 1.856 times that amount.(Tasman District, South Island, New Zealand)
New Zealand's Abel Tasman National Park measures about 55,670 acres in total area. The size of the park has increased over the years as donated parcels of land have been added to it, with the last expansion in 2008 adding 1,952 acres.
It's about half as big as Edinburgh
In other words, 30,000 acres is 0.46 times the size of Edinburgh, and the size of Edinburgh is 2.17 times that amount.(a.k.a. Edinburgh, a.k.a. Dùn Èideann, a.k.a. Edinburgum) (Scotland, United Kingdom)
Edinburgh, Scotland's capital, measures 65,200 acres. Edinburgh Castle, atop Castle Rock, is the centerpiece of the city and has been continuously-occupied for over 1,800 years.
It's about two-fifths as big as Dublin
In other words, 30,000 acres is 0.3824 times the size of Dublin, and the size of Dublin is 2.615 times that amount.(a.k.a. Baile Átha Cliath) (Leinster, Ireland) (for metro Dublin City)
The city of Dublin and its surrounding metro areas measure 78,460 acres. Dublin is home to the Spire of Dublin, a stainless steel monument built in 2003 that rises to 121.2 m in height.