The Count of Things

Bluebulb Projects' The Measure of Things presents:

It's about 45 times the number of Union Stations in the United States

In other words, 6,100 is 45.20 times the count of Union Stations in the United States, and the count of Union Stations in the United States is 0.0221 times that amount.

(a.k.a. Union Terminal; a.k.a. Joint Station; a.k.a. Union Depot) (2016 figures)

It's about 50 times the number of Elements on the Periodic Table

In other words, 6,100 is 51.70 times the count of Elements on the Periodic Table, and the count of Elements on the Periodic Table is 0.0193 times that amount.

(a.k.a. Periodic Table of the Elements, a.k.a chemical elements) (confirmed elements as of 2016)
From element number one, hydrogen, to element one-hundred eighteen, ununoctium, there are 118 confirmed elements on the Periodic Table. Ninety-four of the elements exist in nature, and the remaining twenty-four have only been synthesized in labs (not having occurred naturally in the time since scientists have begun researching them)

It's about 60 times the number of Wolves in Yellowstone National Park

In other words, 6,100 is 58.70 times the count of Wolves in Yellowstone National Park, and the count of Wolves in Yellowstone National Park is 0.017 times that amount.

(a.k.a. Henihco'oo; a.k.a. Héetíhco'oo) (December 2014 figures; Wyoming Park area)
As of the 2014 population count, there were 104 wolves living in Yellowstone National Park, in twelve packs. All of the wolves now living in the Park are thought to have descended from the 66 wolves (re)introduced into the Park in 1995-96.

It's about 70 times the number of Keys on a Piano

In other words, 6,100 is 69 times the count of Keys on a Piano, and the count of Keys on a Piano is 0.014 times that amount.

(Moden layout; A₀ to C₇)
Most modern keyboards have 88 keys, comprising seven octaves and an additional major third. A full-size, acoustic piano may have as many as 12,000 separate parts.

It's about 85 times the number of Submarines in the US Navy

In other words, the count of Submarines in the US Navy is 0.012 times 6,100.

(a.k.a. Subs) (includes all types, all classes) (2015 figures)
The United States Navy maintains a fleet of 72 active submarines. A typical submarine goes to sea with a crew of about 140.

It's about one-ninety-fifth the number of Words in War and Peace

In other words, 6,100 is 0.0103867 times the count of Words in War and Peace, and the count of Words in War and Peace is 96.2770 times that amount.

(1869) (1968 Ann Dunnigan translation, New American Library)

It's about 100 times the number of Countries in Africa

In other words, 6,100 is 110 times the count of Countries in Africa, and the count of Countries in Africa is 0.0091 times that amount.

(2016 figures) (sovereign states recognized by the UN only)
The continent of Africa includes 56 sovereign countries recognized by the United Nations as of 2020. It is the second-most populous continent in the world, with 1.3 billion inhabitants.List_of_sovereign_states_and_dependent_territories_in_Africa