Maps of Ulaanbaatar
In mongolmaps: Maps and Administrative Boundaries of Mongolia and Ulaanbaatar

knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>",
  fig.width = 7,
  fig.height = 5,
  # Sharp figures on the website; small ones in the CRAN package.
  dpi = if (identical(Sys.getenv("IN_PKGDOWN"), "true")) 200 else 96,
  eval = rlang::is_installed("ggplot2")
)

library(mongolmaps)

Ulaanbaatar has three map levels: the city, its 9 districts (duureg) and its 204 khoroos. The layers fit together exactly.

mn_ub()
mn_ub_districts()
mn_khoroos()

Districts

mn_map(mn_ub_districts(), fill = name, label = TRUE)

Baganuur and Bagakhangai are exclaves, far to the east and south-east of the main city. To focus on the city centre, keep the districts you need:

central <- c("Bayangol", "Bayanzurkh", "Chingeltei", "Khan-Uul", "Songinokhairkhan", "Sukhbaatar")
mn_map(mn_khoroos(district = central), fill = parent_pcode)

District names accept common abbreviations such as "BZD", "SBD" or "KhUD", and Cyrillic:

mn_khoroos(district = "\u0411\u0417\u0414")

Khoroos

Khoroos are numbered within their district; the number is in the number column, and mn_map(label = TRUE) shows it.

mn_map(mn_khoroos(district = "Sukhbaatar"), fill = area_km2, label = TRUE)

To find one khoroo, use mn_match() with the district:

mn_match("15-r khoroo", level = "bag", within = "Bayangol")
mn_match("Bayangol 15")

Joining statistics

NSO publishes many statistics by khoroo. The example data has the mid-year population:

pop <- mn_example_population[mn_example_population$Year == 2025, ]
khoroo_pop <- mn_join(pop, by = "Region", level = "bag", within = "Ulaanbaatar")

mn_map(
  khoroo_pop[khoroo_pop$parent_pcode %in% c("MN1107", "MN1119", "MN1125"), ],
  fill = value / area_km2,
  title = "People per km2: Bayangol, Sukhbaatar and Chingeltei"
)

Interactive maps

mn_leaflet(khoroo_pop, fill = value)

About the khoroo boundaries

The khoroo boundaries come from the open khoroo-map project, which does not state where its data come from, so treat them as unofficial. They were fitted to the official Ulaanbaatar outline; the district boundaries in mn_ub_districts() are the unions of their khoroos and follow the current city layout. See ?mn_khoroos for details.