Hai'an
URL: https://knowledge.ivjn.us/en/places/jiangsu-hai-an.html

Hai'an is a county-level city in Nantong, Jiangsu, with administrative division code 320685.

## Administrative status

Hai'an is part of [Nantong](https://knowledge.ivjn.us/en/places/jiangsu-nantong.html) (prefecture-level city)[^mca2023].

## Basic facts

- Administrative division code: 320685[^mca2023]
- Area: 1,183.57 km²[^wikidata]
- Population: 874,334 (2020)[^wikidata]

## History

- From 1 March 1948: named “海安县”, until 11 May 2018[^wikidata].
- From 1 January 1943: named “紫石县”, until 28 February 1948[^wikidata].

Updated: 2026-10-29

Tags:
- Administrative division https://knowledge.ivjn.us/en/tags/admin-division.html

Relations:
- Located in: Nantong https://knowledge.ivjn.us/en/places/jiangsu-nantong.html (依据民政部2023年县以上行政区划代码的隶属层级。)

Mentioned in:
- Nantong https://knowledge.ivjn.us/en/places/jiangsu-nantong.html

Sources:
- 2023年中华人民共和国县以上行政区划代码（民政部） https://www.mca.gov.cn/mzsj/xzqh/2023/202301xzqh.html 代码 320685 海安市
- Wikidata Q1371411 https://www.wikidata.org/wiki/Q1371411
- Hai'an (Wikipedia) https://en.wikipedia.org/wiki/Hai%27an
- 海安市（维基百科） https://zh.wikipedia.org/wiki/%E6%B5%B7%E5%AE%89%E5%B8%82