science

UBIGEO

UBIGEO is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand UBIGEO rather than just read about it. In short: UBIGEO (Spanish pronunciation: [uβiˈxeo]) is the coding system for geographical locations (Spanish: Código Ubicacíon Geográfica) in Peru used by the National Institute of Statistics and Informatics (Spanish: Instituto Nacional de Estadística e Informática, INEI) to code the first-level administrative subdivision: regions (Spanish: regiones, singular: región), the second-level administrative subdivision: provinces (S…

Key takeaways

UBIGEO belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect UBIGEO to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of UBIGEO from memory before moving on to harder problems.

Reference excerpt

UBIGEO (Spanish pronunciation: [uβiˈxeo]) is the coding system for geographical locations (Spanish: Código Ubicacíon Geográfica) in Peru used by the National Institute of Statistics and Informatics (Spanish: Instituto Nacional de Estadística e Informática, INEI) to code the first-level administrative subdivision: regions (Spanish: regiones, singular: región), the second-level administrative subdivision: provinces (Spanish: provincias, singular: provincia) and the third-level administrative subdivision: districts (Spanish: distritos, singular: distrito). There are 1874 different ubigeos in Peru.

Syntax The coding system uses two-digit numbers for each level of subdivision. The first level starts numbering at 01 for the Amazonas Region and continues in alphabetical order up to 25 for the Ucayali Region. Additional regions will be added to the end of the list, starting with the first available number. The second level starts with 0101 for the first province in the Amazonas region: Chachapoyas Province and continues up to 2504 for the last province Purús in the Ucayali Region. The provinces are numbered per region with the first province always being the one in which the regions capital is located. The remaining provinces are coded in alphabetical order. Additional provinces will be added per region to the end of the list, starting with the first available province number. The third level; starts with 010101 for the first district in the first province in the Amazonas region: Chachapoyas District and continues up to 250401 for the last district in the last province of the Ucayali region: Purús District. The districts are numbered per province with the first district always being the one in which the province's capital is located. The remaining districts are coded in alphabetical order. Additional districts will be added per province to the end of the list, starting with the first available district number.

Examples

Regions 01 Amazonas Region 02 Ancash Region 03 Apurímac Region

Provinces 0101 Chachapoyas Province in the Amazonas region. 0102 Bagua Province in the Amazonas region. 0103 Bongará Province in the Amazonas region. 0104 Condorcanqui Province in the Amazonas region. 0105 Luya Province in the Amazonas region. 0106 Rodríguez de Mendoza Province in the Amazonas region. 0107 Utcubamba Province in the Amazonas region. 0201 Huaraz Province in the Ancash region.

Districts 010101 Chachapoyas District in the Chachapoyas province. 010102 Asunción District in the Chachapoyas province. 010103 Balsas District in the Chachapoyas province. 010104 Cheto District in the Chachapoyas province. 010105 Chiliquín District in the Chachapoyas province.

Recent additions

Worked examples

Example 1 — a first encounter with UBIGEO

Start with the simplest possible case. Write down what UBIGEO claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to UBIGEO before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about UBIGEO ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of UBIGEO

In research: UBIGEO appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses UBIGEO in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: UBIGEO is common in secondary-school and first-year university syllabi. It links to neighbouring topics Geocodes, Geography of Peru, so understanding it makes those chapters shorter.
In everyday life: Look for UBIGEO outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study UBIGEO in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what UBIGEO means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain UBIGEO out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is UBIGEO in simple terms?

Why does UBIGEO matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study UBIGEO?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on UBIGEO.