---
title: "Crude Birth Rate (CBR): Definition & Formula"
description: "Crude Birth Rate (CBR) measures live births per 1,000 people annually, crucial for understanding population growth trends in countries like India."
url: "https://modeldiplomat.com/learn/glossary/crude-birth-rate"
---

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Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- The crude birth rate is the number of live births occurring during a year per 1,000 mid-year population of a given area.
- Why is the birth rate called 'crude'?
- How does the crude birth rate differ from the total fertility rate?
- What was India's crude birth rate in 2020?
- How is the crude birth rate calculated when civil registration is incomplete?

[Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated June 22, 2026

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India's Sample Registration System, published by the Registrar General of India, reported a national crude birth rate of 19.5 per 1,000 population for 2020, down sharply from about 36 in the early 1970s.

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